APA (7th ed.) Citation

United States. Environmental Protection Agency. (2006). Certification programs for irrigation professionals. United States Environmental Protection Agency.

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Certification Programs for Irrigation Professionals. [Washington, D.C.]: United States Environmental Protection Agency, 2006.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Certification Programs for Irrigation Professionals. United States Environmental Protection Agency, 2006.