Libraries: MLA Style Guide for Citations (9th edition): Works Cited Page

Guidelines for the Works Cited Page

Title the page Works Cited. Center the title.
The list of citations will be double spaced. Do not put an extra space in between citations.
Indent all second and subsequent lines of citations one half inch from the margin. (It's called hanging indentation)
Alphabetize your list of citations by authors' last names. If there is not an author's name, alphabetize by the first word of the title.
If there are multiple sources by the same author, list the author's name as usual in the first citation (citations by the same author will be alphabetized by title). In the subsequent citations, in the place of the authors name, include three hyphens (---) followed by a period. Then list the rest of the citation as usual, beginning with the title of the source.

To set your citations to hanging indent in Word:

Select all of your citations at once.
Click on the Paragraph Dialog Launcher - the tiny little arrow on the bottom right of the Paragraph group on the Home ribbon.