Originally Posted by: schmangeParaphrasing isn't plagiarism. It's taking someone elses editorial, reading it, and then writing your own version about the subject using your own words.
Plagiarism is copying what somebody else has written or taking somebody’s else’s idea and trying to pass it off as original.

You have to give credit for paraphrased materials. In a research paper, for example, a paraphrased sentence MUST have a citation at the end, even if there are no actual quotations.