When we use another person's idea in our research, we must include a brief notation next to that idea to let our readers know who developed it. This brief notation is called an in-text citation. At the end of our work, we include a fuller notation, which provides details that allow others to identify and locate the source in which we found that idea. This fuller notation is referred to as an end-of-paper citation.
Which details must be included within these in-text and end-of-paper citations, and how each is formatted, depends on the citation style we have been asked to use. For example, in both APA style and MLA style, the in-text citation typically goes inside a set of parentheses. In both Chicago style and CSE style, in-text citations are typically indicated with superscript numerals that refer to footnotes (bottom of page) or endnotes.
In all four of these styles, the end-of-paper citations are listed on the last (usually separate) page of the paper. In that page is titled "References." In MLA style, that page is titled, "Works Cited." And, in CSE style, that page is titled "Cited References."
Each citation style has different rules about how in-text and end-of paper citations for various source types (books, articles, web pages, videos) and situations (online, print, no author, multiple authors) must be constructed (what is included, and in what order) and formatted (punctuation, italics, capitalization).
There are thousands of citations styles, but APA, MLA, CSE and Chicago are the four most commonly used in college research writing. Each style also has formatting rules for the paper itself, including title page rules, font size, section headers and so on. You will find details about the rules of a particular style in the style guideslocated at the tab (above) for that style.
You do not have to cite your own ideas, unless they have been published. And you do not have to cite common knowledge, or information that most people in your audience would know without having to look it up.
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