The MLA Style Center: Writing Resources from the Modern Language Association is the official source for MLA documentation style.
These sites provide more citation examples:
MLA (7th edition) - St. Mary's University, Blume Library - examples and guidance: In-Text Citations; Electronic Sources: Web, etc.; Electronic Sources: Subscription Sources; Electronic Sources: Books; Electronic Sources: Non-Internet; Print Sources: Books; Print Sources: Articles; Miscellaneous Sources.
MLA Handbook for Writers of Research Papers. 7th ed.
MLA Style Manual and Guide to Scholarly Publishing. 3rd ed.
The Bedford Handbook. 8th edition. by 