NOTE: These books mention MLA 7th edition not the newer 8th edition, some of the information will be correct some will not. Be sure to use discression.
Rules for Writers is a college writer’s companion that covers writing, grammar, research, and documentation in an extremely affordable and portable spiral-bound format.
Used by nearly a quarter million students each year, A Pocket Style Manual is a straightforward reference, with content flexible enough to suit the needs of writers in the humanities, social sciences, sciences, health professions, business, fine arts, education, and beyond. The new edition provides even more help with research writing and supports students in every discipline.
Rules for Writers
A Pocket Style Manual by 
MLA Style Manual and Guide to Scholarly Publishing by 