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Writing and Citing Sources

Citations are used to identify the reliable sources on which an article is based.

Purdue Online Writing Lab

The Online Writing Lab (OWL) at Purdue University houses writing resources and instructional material, and provides these as a free service of the Writing Lab at Purdue. Students, members of the community, and users worldwide will find information to assist with many writing projects. 

Citing Sources from Duke University Library

MLA, APA, and other formats and citation tools.
Citation Machine Citation machine helps students and professional researchers to properly credit the information that they use.