APA (7th ed.) Citation

Harder, C. (1998). Serving maps on the Internet: Geographic information on the World Wide Web. Environmental Systems Research Institute.

Chicago Style (17th ed.) Citation

Harder, Christian. Serving Maps on the Internet: Geographic Information on the World Wide Web. Redlands, Calif.: Environmental Systems Research Institute, 1998.

MLA (9th ed.) Citation

Harder, Christian. Serving Maps on the Internet: Geographic Information on the World Wide Web. Environmental Systems Research Institute, 1998.