Wits' definition of plagiarism:- "The unjustified taking of the ideas, thoughts and writings contained in a particular source and submitting it as if the ideas, thoughts and writings are your own, whereas in fact they are not". (Source: Wits Legal Office)
http://en.wikipedia.org/wiki/Plagiarism
http://tlt.its.psu.edu/plagiarism/facguide/define
http://science.widener.edu/svb/essay/plagiar.html
http://www.plagiarism.org
http://tlt.its.psu.edu/plagiarism/tutorial/definition
http://www.mantex.co.uk/samples/plgrsm.htm
http://www.plagiarism.org/learning_center/what_is_plagiarism.html
http://www.ucalgary.ca/~hexham/study/plag.html
http://www.duplichecker.com/plag.asp
http://www.indiana.edu/~wts/pamphlets/plagiarism.shtml
PLAGIARISM - What it is, and How to Avoid It