Put the citation immediately after the closing quotation mark.
Include the author’s last name and the page number in parentheses.
Place the period after the citation, not before it.
If the author’s name is already mentioned in the sentence, include only the page number in parentheses.
If there is no page number, use the required format for that source style.
Follow the citation style you are using, such as MLA, APA, or Chicago.