Gaya APA

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

Gaya MLA

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