Under the “fair use” rule of copyright law, a person may make limited use of another author’s work without asking permission. As noted in the Fair Use Checklist box:
"There's no one right answer as to what constitutes a "fair use" of a particular copyrighted work. The answer varies from situation to situation."
Here are some suggested guidelines for both photocopying and Sakai at Walsh University:
Using Materials Found on the Internet
Always credit the source
If you are using the information on your personal webpage ask permission or simply link to the site
If you receive permission to use the material keep a copy for your records