APA

United States, . (2004). EPA microbiological alternate test procedure (ATP) protocol for drinking water, ambient water, and wastewater monitoring methods: guidance. Washington, DC: U.S. Environmental Protection Agency, Office of Water. Engineering and Analysis Division.

Chicago

United States, . 2004. EPA microbiological alternate test procedure (ATP) protocol for drinking water, ambient water, and wastewater monitoring methods: guidance. Washington, DC: U.S. Environmental Protection Agency, Office of Water. Engineering and Analysis Division.

Harvard

United States, . (2004). EPA microbiological alternate test procedure (ATP) protocol for drinking water, ambient water, and wastewater monitoring methods: guidance. Washington, DC: U.S. Environmental Protection Agency, Office of Water. Engineering and Analysis Division.

MLA

United States, . EPA microbiological alternate test procedure (ATP) protocol for drinking water, ambient water, and wastewater monitoring methods: guidance. Washington, DC: U.S. Environmental Protection Agency, Office of Water. Engineering and Analysis Division. 2004.