APA (7th ed.) Citation

United States. Environmental Protection Agency. (1999). Indoor air quality: Tools for schools, training modules 1 & 2. [U.S. Environmental Protection Agency].

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Indoor Air Quality: Tools for Schools, Training Modules 1 & 2. [Washington, D.C.?]: [U.S. Environmental Protection Agency], 1999.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Indoor Air Quality: Tools for Schools, Training Modules 1 & 2. [U.S. Environmental Protection Agency], 1999.