MLA style is one of the oldest and most popular citation styles. It is the citation style of choice for the liberal arts and humanities. The "Bible" of MLA Style is the:
MLA handbook for writers of research papers. 7th edition. 2009. The library has 5 copies in the Reference Collection.
The library also has a number of other MLA style books available, click the link below to do a catalog search:
There are also many useful guides online: