From the Writing Center of University of Wisconsin-Madison
What is plagiarism?
“To steal and pass off (the ideas or words of another) as one's own : use (another's production) without crediting the source.”
plagiarism. (2010). In Merriam-Webster Online Dictionary.Retrieved August 10, 2010, from http://www.merriam-webster.com/dictionary/plagiarism
When should you cite your sources?
If you directly quote a source
If you paraphrase ideas from another person's work
If you summarize ideas from another person's work
Types of plagiarism
Mixing words or ideas from an unacknowledged source in with your own words or ideas.
Mixing together uncited words and ideas from several sources into a single work.
Mixing together properly cited uses of a source with uncited uses.
A phrase or passage that is copied word for word, but not quoted.
Rephrasing another person’s work and inserting into your own work without acknowledging the original source.
Half crediting source; whereby you acknowledge the author’s work the first time, but continue to use the author’s words without giving additional attribution.