Cita APA (7th ed.)

Berk, S. G., & Gunderson, J. H. (1993). Wastewater organisms: A color atlas. Lewis.

Cita Chicago (17th ed.)

Berk, Sharon G., i John H. Gunderson. Wastewater Organisms: A Color Atlas. Boca Raton, FL: Lewis, 1993.

Cita MLA (8th ed.)

Berk, Sharon G., i John H. Gunderson. Wastewater Organisms: A Color Atlas. Lewis, 1993.