From the MLA website: "The MLA Style Manual is the association's guide for graduate students, scholars, and professional writers. It offers complete guidance on writing and documenting scholarly texts, submitting them for peer review, and preparing them for publication."
The MLA Handbook is the association's guide for high school and undergraduate students on the preparation of research papers. It gives step-by-step advice on every aspect of writing papers, from selecting a topic to submitting the completed paper.
From the APA website: "How does Concise Rules differ from the Publication Manual of the American Psychological Association? The Publication Manual remains the best source for broad background information about scientific publishing. It provides guidance on designing research, identifying the parts of a scholarly article, understanding the process of journal publication, and submitting articles for publication. Concise Rules, by comparison, targets only those rules writers need for choosing the best words and format for their articles. It offers a comprehensive list of essential writing standards in a convenient, easily retrievable format."
From the publisher: "With his latest book, Cite Right, Lipson once again provides much-needed counsel in a concise and affordable handbook for students and researchers. Building on Doing Honest Work in College, Lipson’s new book offers a wealth of information on an even greater range of citation styles and details the intricacies of many additional kinds of sources. "
From the publisher: "This helpful guide explains the principles of academic integrity in a clear, straightforward way and shows students how to apply them in all academic situations—from paper writing and independent research to study groups and lab work. Teachers can use this book to open a discussion with their students about these difficult issues... Many universities that adopt this book report a reduction in cheating and plagiarism on campus."
Below are additional citation tools. Remember that the style manuals themselves provide the most accurate information.