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To acknowledge where you found your ideas
Lend credibility to your ideas
Allow others to verify your facts
Provide your readers with a link to additional sources on the topic
When
Quoting - using another's exact words. Put them in quotation marks
Paraphrasing - re-stating another's ideas in your own words
Summarizing - summing up a lengthly passage in one or two sentences of your own
All sources used, whether quoted, prarphrased , or summarized must be citing using the appropriate citation method.
At the Writing Center
At the Library
From your Professor