When you are writing a paper or doing research on a topic, you must cite ALL of your sources in order to avoid plagiarism.
Your research assignments will require a list of works cited.
Complete your works cited in MLA format unless directed otherwise by your teacher.
The Owl at Purdue is an excellent resource for MLA style guidelines, maintained by the Writing Lab at Purdue University.
If your teacher allows, use EasyBib to help generate and organize citations in MLA format. Be careful! Automated citations are not always correct, and it is YOUR RESPONSIBILITY to check the details of your citation.