ProQuest RefWorks is nice, but you always have the most control over the accuracy of your citations when you do it by hand using the selected style manual (below).
MLA Style Manual and Guide to Scholarly Publishing by Modern Language Association of America Staff (Created by)
Call Number: REF LB2369 .G53 2009 C1 - C3
ISBN: 9780873522977
Publication Date: 2008-01-01
Purdue OWL
The Purdue OWL is an excellent online resource for understand citations and formatting.