http://www.writing.utoronto.ca/images/stories/Documents/paraphrase.pdf
http://writing2.richmond.edu/writing/wweb/paraphrs.html
http://www.writing.ku.edu/~writing/guides/paraphrase.shtml
http://www.dlsweb.rmit.edu.au/lsu/content/4_WritingSkills/04paraphrasing.htm
http://www.sdc.uwo.ca/writing/handouts/Quoting_Paraphrasing_and_Summarizing.pdf