Below is an excerpt of the MLA 7th edition handbook on how to properly format a works cited list:

“Center the title, Works Cited, an inch from the top of the page. Double-space between the title and the first entry. Begin each entry flush with the left margin; if an entry runs more than one line, indent the subsequent line or lines one-half inch from the left margin. This format is sometimes called hanging indention, and you can set your word processor to create it automatically for a group of paragraphs. Hanging indention makes alphabetical lists easier to use. Double-space the entire list, both between and within entries. Continue the list on as many pages as necessary.”

Add annotations at the end of the citation (as if it was part of the citation) and continue to double space and indent the entry.