What is the proper way to include and format footnotes in an essay, providing an example of how to do so effectively?

To include footnotes in an essay, use superscript numbers in the text to indicate where the footnote should appear. At the bottom of the page, write the corresponding number followed by the citation or additional information. For example, if you mention a statistic in your essay, you can add a footnote like this1 at the end of the sentence. Then, at the bottom of the page, write "1. Author's Last Name, Title of Source, Page Number."