Tohutoro APA (7th ed.)
Greenberg, A. E., Clesceri, L. S., & Eaton, A. D. (1992). Standard methods (18a ed.).
Tohutoru Kātū Chicago (17th ed.)
Greenberg, Arnold E., Lenore S. Clesceri, me Andrew D. Eaton. Standard Methods. 18a ed. 1992.
Tohutoro MLA (9th ed.)
Greenberg, Arnold E., et al. Standard Methods. 18a ed. 1992.
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