United States. Environmental Protection Agency. (2002). Onsite wastewater treatment and disposal systems and onsite wastewater treatment systems manual. U.S. Environmental Protection Agency.
Citace podle Chicago (17th ed.)United States. Environmental Protection Agency. Onsite Wastewater Treatment and Disposal Systems and Onsite Wastewater Treatment Systems Manual. Cincinnati: U.S. Environmental Protection Agency, 2002.
Citace podle MLA (9th ed.)United States. Environmental Protection Agency. Onsite Wastewater Treatment and Disposal Systems and Onsite Wastewater Treatment Systems Manual. U.S. Environmental Protection Agency, 2002.
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