Whenever you're doing research, you should always document your work. Don't plagiarize! If you're not familiar with the academic honesty policy at Augusta University, be sure you read it. The policy is located on in the Augusta University catalog and found at http://catalog.augusta.edu/content.php?catoid=13&navoid=1711#Academic_Honesty.
For additional information and guidance on good documentation practices, the following sites may be useful:
Suggested books for citation help.