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..
Some students can find citations difficult and/or confusing. To help with this problem, the library now subscribes to NoodleTools.
NoodleTools is a bibliographic citation and notes management tool. It supports you in creating citations for various source types in the appropriate style, and also helps you keep those citations associated with the notes that you take on the sources you use. It is simple to use and will save you time.
If you are planning on working in the sciences and doing research throughout your career, I 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.