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