Citing or citation is a practice of documenting the information sources used in your academic work. This video explains what is a citation and why we do it:
MLA style requires two types of citations:
In-text citation – a brief citation in your paper's body every time you use material from outside sources, including the following elements:
Works Cited list – an alphabetical list at the end of your paper that includes a full citation for each source you cited in your paper. Every citation in your list should have a corresponding in-text citation in the body of your work.