Writing a dissertation, internship report or thesis without mastering footnotes is an unnecessary risk. This discreet element is at the heart of academic rigour: it allows you to cite your sources, add precision and demonstrate the solidity of your work.
In this article, you will find everything you need to know about footnotes: definition, purpose, formatting rules according to APA, MLA and Chicago standards, and a practical guide to inserting them in Word and Google Docs.
Table of contents
A footnote is an annotation placed at the bottom of a page, indicated in the text by a reference mark (number, asterisk or superscript letter). It allows additional information to be added without interrupting the flow of reading.
It is, however, distinct from two other elements with which it is often confused.
A footnote appears at the bottom of each relevant page. An endnote groups all annotations at the end of the document. Both serve the same purpose, but footnotes are more convenient for the reader: the information is immediately accessible, without having to flip to the end.
The confusion is common. A footnote refers to a specific source at a specific point in the text. A bibliography lists all the sources used throughout the work. The two are complementary: one does not replace the other. To learn more about this point, consult our complete guide.
Footnotes serve three main functions in academic work.
Integrating a full reference directly into a paragraph breaks the reading rhythm. A footnote allows the reader to be referred to the source without interrupting the argument. It is a tool for precision, not decoration.
Some information deserves to be mentioned without being developed in the body of the text: a nuance, a point of debate, a technical definition, the translation of a foreign language quote. The footnote is the ideal place for this type of content.
Whenever you use another author's words or ideas, you are obliged to acknowledge it. A direct quote without a reference is plagiarism. The same applies to an unsourced paraphrase. To master the distinction between direct and indirect quotes, consult our dedicated article.
Footnotes are expected in the vast majority of long academic documents. Here is how to use them depending on the type of work.
The dissertation is the natural home of the footnote. It accompanies every quotation, every conceptual borrowing, every reference to a primary or secondary source. A well-sourced dissertation is a credible dissertation. To structure your entire work, consult our complete guide.
An internship report draws on fewer academic sources than a dissertation, but footnotes remain useful: to reference an internal company document, cite an author in the theoretical section, or add a clarification on a technical term. Find our complete guide on writing an internship report.
In a thesis, footnotes can be numerous and substantial. Certain academic fields, particularly humanities, social sciences and law, make intensive use of them. Others, such as exact sciences, use them more sparingly in favour of in-text references.
There is no universal rule on the number of footnotes. The common sense rule: every borrowing must be sourced, but a note should not become a parallel paragraph. If information is important enough to be developed, it belongs in the body of the text.
The format of a footnote depends on the citation standard required by your institution. The three most common standards in international academic contexts are APA, MLA and Chicago.
The APA standard (American Psychological Association) is widely used in social sciences, psychology and education. It favours in-text citations (author, date) over footnotes. Footnotes are reserved for supplementary comments and clarifications, not for bibliographic references.
Example of a footnote in APA:
¹ This distinction is also addressed by Dupont (2019) in a study on citation practices in French-speaking academic contexts.
To go further with the APA style, our complete guide is waiting for you.
The MLA standard (Modern Language Association) is used primarily in literature, languages and humanities. Like APA, it favours in-text citations. Footnotes play a role of commentary or reference to secondary sources.
Example of a footnote in MLA:
¹ See also the work of Martin (2021) on the evolution of citation practices in higher education.
To ensure you don't miss any MLA requirements, consult our complete guide.
The Chicago standard is particularly used in history, humanities and law. It stands out from the previous two by making intensive use of footnotes for complete bibliographic references.
Example of a footnote in Chicago:
¹ Jean Dupont, Introduction to Academic Methodology (Paris: Éditions Universitaires, 2020), 45.
The Chicago standard exists in two versions: the Notes-Bibliography version, which uses footnotes, and the Author-Date version, which works like APA.
Beyond the specificities of each standard, all share a common principle: every cited source must be identifiable and verifiable. For an overview, consult our article on citation standards to avoid plagiarism.
Good news: the two most widely used tools among students handle the insertion and automatic numbering of footnotes.
The numbering is automatic and continuous: if you add or delete a note, Word reorganises the entire sequence without any manual intervention.
As with Word, the numbering is automatic. Notes reorganise themselves if you add or delete any.
Practical tip: never type your footnotes manually at the bottom of the page using line breaks. Always use the dedicated function in your software. This guarantees correct numbering and avoids layout shifts when the document is modified.
A poorly written footnote does not protect against plagiarism. This is a frequent mistake, and it can have serious consequences.
Citing "Dupont, 2020" without specifying the work, the page or the context is an insufficient reference. Academic standards require complete and verifiable information. A careless note can in some cases be interpreted as an attempt to circumvent the rules.
Unintentional plagiarism is one of the most common forms of plagiarism among students. Annotating readings without keeping track of sources, then writing without being able to trace back the origin of an idea: the result is the same as deliberate plagiarism in the eyes of a marker. To understand all the mechanisms, read our article on plagiarism and its different forms.
Before submitting a dissertation, report or thesis, it is essential to verify that all sources are correctly cited and that no passage unintentionally resembles existing content. We also recommend using a reliable AI detector.
FAQ
What is the difference between a footnote and a bibliography?
A footnote refers to a specific source at a specific point in the text. A bibliography lists all the sources used throughout the work. The two are complementary: a bibliography does not replace footnotes, and vice versa.
Are footnotes mandatory in a dissertation?
It depends on the standard required by your institution. In Chicago style, footnotes are the norm. In APA or MLA, references are generally integrated into the text. In all cases, every cited source must be referenced, regardless of the format chosen.
How do I number footnotes automatically?
In Word: References tab, then "Insert Footnote". In Google Docs: Insert menu, then "Footnote". Both tools handle numbering automatically.
Is a footnote enough to avoid plagiarism?
No. An incorrect, incomplete or missing footnote constitutes a form of plagiarism. The note must be written according to the applicable standards and contain sufficient information to trace the source.
Which citation standard should I use for footnotes?
It depends on your discipline and your institution's requirements. Chicago style makes the most extensive use of footnotes for references. APA and MLA reserve them mainly for comments. If in doubt, ask your dissertation supervisor or consult your institution's methodological guidelines.
Jérémy STERN
