MLA, 8th Edition differs from the 7th edition
Working with Works Cite - Here are the basic 9 elements that you need.
Author's last name, first name.
Title of Source.
Title of Container (Often times this is italicized),
Version,(such as an edition)
Location (this will be the page numbers or it could be a url for an online source)
Note that you won't necessarily have the information for all 9 parts. If you don't have it it, leave it out. No need to put (n.d.) or (n.p.).