The Internet contains a wealth of information published by governments, organizations, educational institutions, commercial enterprises, and private individuals.

Since there are no standards for quality, users must evaluate all information carefully to make sure it is reliable.

Generally speaking, you can find reliable information in Web sites published by the domains described below:

Domain	Type of Agency	Example & URL
.gov	U.S. government agencies/departments	National Institutes of Health:  http://www.nih.gov
.org	Professional societies or organizations	American Psychological Association:  http://www.apa.org
.edu	colleges and universities	Harvard University:   http://www.harvard.edu

Scholarly sources are not consistently available for free on the Internet. Some of the most reliable information in existence must still be obtained from traditional sources such as books, government documents, and scholarly journals.