Gaya APA

Inc., M, &, E. (1991). Wastewater engineering: treatment, disposal, and reuse (3rd ed.). New York: McGraw-Hill, Inc..

Gaya MLA

Inc., Metcalf, &, Eddy,. "Wastewater engineering: treatment, disposal, and reuse". 3rd ed. New York: McGraw-Hill, Inc., 1991. Text.