APA
New York (State). Department of Environmental Conservation, . (1978). Manual of instruction for wastewater treatment plant operators. Albany: Distributed by Health Education Service.
Chicago
New York (State). Department of Environmental Conservation, . 1978. Manual of instruction for wastewater treatment plant operators. Albany: Distributed by Health Education Service.
Harvard
New York (State). Department of Environmental Conservation, . (1978). Manual of instruction for wastewater treatment plant operators. Albany: Distributed by Health Education Service.
MLA
New York (State). Department of Environmental Conservation, . Manual of instruction for wastewater treatment plant operators. Albany: Distributed by Health Education Service. 1978.
