Citation is an important part of the research process because ...
Whenever you quote, paraphrase, summarize, or otherwise refer to the work of another, you must cite the source using either a parenthetical citation, footnote, or endnote. In addition, a References page or Works Cited page is almost always placed at the end of your paper.
Parenthetical citations (also referred to as "in-text citations") are abbreviated citations that direct readers to the full bibliographic citations listed in your Works Cited or References list. In most cases, parenthetical citations include the author's last name and the page number for the information cited.
Footnotes and endnotes contain full bibliographic citations for the first time a source is cited and abbreviated citations (author's last name and page number) for each successive citation. The primary difference between footnotes and endnotes is that footnotes are placed numerically at the foot of the same page where the references are made, while endnotes are placed numerically at the end of the essay on a separate page entitled Endnotes or Notes.
Different academic disciplines use different citation styles. The three most popular citation styles are MLA, APA, and Chicago. It is always best to ask your professor which citation style they prefer, but as a general rule these styles are used as follows: