Gaya APA

Standard methods for the examination of water and wastewater 21 th edition / editor Lenore S. Clesceri, Arnold E. Greenberg, Andrew D. Eaton. (2005). : Washington, D.C. : American Public Health Association.

Gaya MLA

Standard methods for the examination of water and wastewater 21 th edition / editor Lenore S. Clesceri, Arnold E. Greenberg, Andrew D. Eaton. Ed. 21th.. : Washington, D.C. : American Public Health Association, 2005. Text.