Why cite your sources?
When you do research, you must carefully indicate and describe your sources of information. You must also give credit to other researchers and writers when you use their words and ideas or paraphrases of their words. If you fail to cite your sources, you may be plagiarizing.
Plagiarism is stealing someone else's words or ideas and claiming them as your own.
The good news is that plagiarism is easy to avoid. Here's the basic rule to follow: If you use words (or images or ideas) that someone else wrote (or created) -- a common occurrence in the "cut and paste world" of computers and networks -- give the author credit for it. Take note that if all of your work is a collection of properly credited quotes from other people, you are not guilty of plagiarism but you might find yourself in trouble with teachers because you have failed to contribute your own ideas to the discussion through your intelligence and creative imagination.
Cite your sources:
Click here for: Chicago Style Citation Guide from Seattle Central Library