Citation is a reference to this file, and we should learn from it in the theory of retaining the original file. The author has no right to change the original intention of the original author, just introduce the methods, results and conclusions used by the original author.

Endnotes are supplementary notes to the text, usually located at the end of the document, listing the source of quotations, etc. Endnote consists of two related parts, including annotation reference mark and its corresponding annotation text. Endnotes, like footnotes, are supplementary explanations to the text. Footnotes are usually located at the bottom of the page and can be used as comments on the contents of the document. Endnotes are generally located at the end of the document, listing the source of quotations, etc.