How to correctly mention a book or dictionary in an essay that's MLA format?

If I have the title of a book or dictionary referenced several times throughout an essay, should I have the title italicized? I'm not quoting anything from the source, just mentioning it's name.



E.G. The Merriam Webster Dictionary is a great dictionary.



Would I italicize, or put in quotes, "Merriam Webster Dictionary"?



Thanks.How to correctly mention a book or dictionary in an essay that's MLA format?
check out either of these websites:



http://www.library.cornell.edu/resrch/ci鈥?/a>



http://ia.juniata.edu/citation/mla/mla02鈥?/a>



hope that helps. =)