Gaya APA

Greenberg, A, E., Clesceri, L, S. (1992). Standard methods for the examination and wasterwater. 18th. (1992). : Washington : American Public Health Ass.,.

Gaya MLA

Greenberg, Arnold, E., Clesceri, Lenore, S. "Standard methods for the examination and wasterwater. 18th.". 1992 : Washington : American Public Health Ass.,, 1992. Text.