You must use citations when:
When in doubt, cite it!
When writing this paper, you will be using the MLA format. MLA uses parenthetical references (instead of footnotes). If you have any questions, please see a librarian at the Welcome desk for assistance with using the MLA Handbook..
The joy of finding footnotes and bibliographic entries that lead to the perfect original source can only happen when scholars carefully track their sources and generate citations in an appropriate style. Neglecting to track your sources as you move through the research process will cost you HOURS of precious time.
Try this excellent tool: (click the image below)
NoodleTools is a bibliographic citation and notes management tool. It creates citations for dozens of source types in a variety of styles. It also helps you keep your citations associated with source notes you create. It is simple to use and will save you HOURS.
If you are planning on working in the sciences and doing research throughout your career, let me recommend you start using Mendeley as a bibliographic control software. An account created today can be carried with you once you graduate from Andover. It is one of the 'chosen' software programs for scientific information control. Just image a scenario where you have dozens of pdf articles and you can search these while you are writing your paper! See the science liaison at the OWHL for more details.