For many years, the required text for SNL's Academic Writing for Adults course has been Diana Hacker's A Writer's Reference. After taking the course, many students have said that they will never sell this book back to the bookstore...a few students have admitted that they keep it on top of their desk at work! A wealth of information and examples related to thesis statements, organization, citation styles, formatting, grammar, and mechanics makes this textbook useful for students at any level, in any course, not just students taking their first (or second, or third) college writing course.
The publisher, Bedford/St. Martin, has just released the seventh edition of A Writer's Reference with a new co-author, Nancy Sommers. This edition has new sections on how to interpret written feedback from instructors and how to prepare a portfolio. If you're interested in checking it out, feel free to pick up a copy from Katie Wozniak or order a free desk copy from the publisher here.