http://www.writing.northwestern.edu/avoiding_plagiarism.html

"Avoiding Plagairism." Helpful tips from Northwestern University. Examples included.

http://owl.english.purdue.edu/handouts/research/r_plagiar.html

"Avoiding Plagiarism." Terrific guidelines from Purdue University on avoiding plagiarism. Includes tests on documentation knowledge.

http://www.indiana.edu/~istd/

"Plagiarism: What it is and How to Recognize and Avoid It." Helpful hints from Indiana University. Includes tips and examples on correct paraphrasing in your papers.

http://gervaseprograms.georgetown.edu/hc/plagiarism.html

"What is Plagiarism?" Helpful Georgetown University site that takes you through many types of plagiarism and gives you tips on avoiding mistakes.

http://www.powa.org

"Paradigm Online Writing Assistant." A terrific tutorial on how to write different kinds of papers using the correct documentation.