when you need permission - fair use guidelines

A Writer’s Guide to Fair Use and Permissions + Sample Permissions Letter

If you need to request permissions from an author or publisher, here are general guidelines, plus a sample letter you can customize.
by Kit Logan via Flickr

Is It Fair Use? 7 Questions to Ask Before Using Copyrighted Material

Fair use allows you to use someone’s copyrighted work without permission. However, invoking fair use is not a straightforward matter. Learn the 7 questions to ask to help determine if your use might be considered fair under the law.