This site is devoted to APA Style and includes free style tips as well as links to online purchasing of the APA Publication Manual, Style Guides, and APA Style-Helper software.
A fully searchable version of the AP Stylebook. Add your own notes and style examples to create your own personalized writing reference and resource.
The Chicago Manual of Style Online an indispensable online reference for all who work with words
The Modern Humanities Research Association Style Guide download page
Founded in 1883 by teachers and scholars, the Modern Language Association (MLA) promotes the study and teaching of language and literature.
The Resource Centre for The Oxford Dictionary for Writers & Editors and The Oxford Guide to Style
Generations of law students, lawyers, scholars, judges, and other legal professionals have relied on The Bluebook's system of citation in their writing. In a diverse and rapidly changing legal profession, The Bluebook continues to provide a systematic method by which members of the profession communicate important information to one another about the sources and legal authorities upon which they rely in their work.