Give credit where credit is due; cite your sources.
Citing or documenting the sources used in your research serves two purposes. Doing so gives proper credit to the authors of the materials use, and it allows those who are reading your work to duplicate your research and locate sources that you have listed as references.
Knowingly representing the work of others as your own is plagiarism. Be sure you've read the CCCOnline Academic Integrity Policy found in the Student Handbook.