The primary difference between a footnote and an endnote is their location in the paper. A footnote is placed at the bottom of the page that contains the reference it refers to. An endnote is placed at the end of the paper. A footnote is often a more abbreviated extension of an in-text citation while endnotes often provide thorough details about the reference cited. In either case, a small number is expressed above the in-text citation -- superscript --, with the matching number in the footnote or endnote containing the notation.