Gaya APA

METCALF, ., Eddy, . (1991). WASTEWATER ENGINEERING: TREATMENT, DISPOSAL AND REUSE (Second edition). New York: MCGRAW-HILL, New York.

Gaya MLA

METCALF, ., Eddy, . "WASTEWATER ENGINEERING: TREATMENT, DISPOSAL AND REUSE". Second edition New York: MCGRAW-HILL, New York, 1991. Textbook.