Plagiarism includes copying text from a source, turning in a paper written by someone else, and using someone else's ideas without citation.
These Need to Be Credited:
Paraphrases (these should be in your own words, not simply adapted)
Ideas from other sources (published, as in a magazine or website, or unpublished, as froma lecture or conversation)
“Copy-and-pastes” from anywhere
These Do Not Need to Be Cited:
Your life
Your research, writing, or art
“Common knowledge” or everyday information, like historical or scientific facts (not the same as published opinions or reviews)
(Adapted from The OWL at Purdue, http://owl.english.purdue.edu/owl)