APA

United States. Environmental Agency, Lewis P. A., Klemm D. J. & Lazorchak J. M. (1992). Short-term methods for estimating the chronic toxicity of effluents and receiving waters to freshwater organisms. Washington: Environmental Protection Agency (EPA).

Chicago

United States. Environmental Agency, Lewis Philip A, Klemm Donald J and Lazorchak James M. 1992. Short-term methods for estimating the chronic toxicity of effluents and receiving waters to freshwater organisms. Washington: Environmental Protection Agency (EPA).

Harvard

United States. Environmental Agency, Lewis P. A., Klemm D. J. and Lazorchak J. M. (1992). Short-term methods for estimating the chronic toxicity of effluents and receiving waters to freshwater organisms. Washington: Environmental Protection Agency (EPA).

MLA

United States. Environmental Agency, Lewis Philip A, Klemm Donald J and Lazorchak James M. Short-term methods for estimating the chronic toxicity of effluents and receiving waters to freshwater organisms. Washington: Environmental Protection Agency (EPA). 1992.