APA (7th ed.) Citation

United States. Environmental Protection Agency. Office of Pollution Prevention and Toxics. (1998). Green chemistry expert system (Version 0.99.). U.S. Environmental Protection Agency, Pollution Prevention and Toxics.

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Office of Pollution Prevention and Toxics. Green Chemistry Expert System. Version 0.99. [Washington, D.C.]: U.S. Environmental Protection Agency, Pollution Prevention and Toxics, 1998.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Office of Pollution Prevention and Toxics. Green Chemistry Expert System. Version 0.99. U.S. Environmental Protection Agency, Pollution Prevention and Toxics, 1998.