Citation is your indication that certain material in your work came from another source. It also provides readers with the information necessary to find that source again. Giving credit to the original author by citing sources is the only way to use other people's work without plagiarizing.
The following situations almost always require citation:
Adapted from: Plagiarism.org
Here are some great resources to help with proper citation styles:
For detailed information on how to use NoodleTools, please see the library's NoodleTools Research & Citation Manager research guide.
A citation serves two main purposes: it gives credit to the author, artist, or creator, and it allows your reader to find the book, article, or photograph.
A style guide shows you how to format your footnotes, bibliographies, or works cited lists. The style format you use (ALA, MLA, Chicago) depends on your field of inquiry.
Citation style manuals are available at the Reference Desk as well as online.
The citation style and formatting you should use depends on your audience, your discipline, and for assignments, your instructor.
For help writing or picking a style, ask your instructor, a librarian, or the Writing Center.
Publication Manual of the American Psychological Association by 
A Manual for Writers of Research Papers, Theses, and Dissertations by 
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