You need to know that there are other. The English Department at CHS uses the fourth edition of the MLA Handbook .
Internal documentation cites the source by leading the reader to the works cited page.
Therefore it gives the info the reader needs to find the source easily there. Usually this is the last name of the author and the page number. Direct quotes must be written exactly as they appear in the original source. If you need to change or add, put your word in square brackets, if you leave out some words, use an ellipse. If the author's name is given in the sentence being cited, whether a direct quote or a paraphrase, then just the number is needed.