APA (7th ed.) Citation

(1999). Web site source book, 1999: A guide to major U.S. businesses, organizations agencies, institutions and other information resources on the World Wide Web (4th ed.). Omnigraphics.

Chicago Style (17th ed.) Citation

Web Site Source Book, 1999: A Guide to Major U.S. Businesses, Organizations Agencies, Institutions and Other Information Resources on the World Wide Web. 4th ed. Detroit, Mich: Omnigraphics, 1999.

MLA (9th ed.) Citation

Web Site Source Book, 1999: A Guide to Major U.S. Businesses, Organizations Agencies, Institutions and Other Information Resources on the World Wide Web. 4th ed. Omnigraphics, 1999.