If you are writing an academic paper, you will need to credit the resources you used in the correct format. Below are links to common citation styles. Make sure you use the correct citation format required by your professor.
For more information, check out the How to Cite guide with information on the importance of citing, various citation styles, building citations and helpful citation tools.
OWL (Online Writing Law) at Purdue University. This site Includes a downloadable sample paper illustrating format and Chicago citation style. Make sure you choose the format that is required by your professor, either Notes and Bibliography or Author - Date.