Once you have written your Argumentation Paper, you will need to make sure that you give credit to all of the resources you used.
This means that you have to say where you got the information that was used in your paper. This is called a citation.
A citation usually includes information such as the author's name, title of the book, or article and journal, publisher, date, and more.
This information allows the instructor to know where you found your research.
For this assignment, your instructor is asking you to use MLA.
Writers Reference 9e by 
MLA - Modern Language Association Handbook by 