Gaya APA

Wanielista, M, P., Jr., W, W, E. (1978). Advances in water and wastewater treatment biological nutrient removal . Michigan: Ann Arbor Science.

Gaya MLA

Wanielista, Martin, P.., Jr., W., Wesley, Eckenfelder,. "Advances in water and wastewater treatment biological nutrient removal". Michigan: Ann Arbor Science, 1978. Text.