Gaya APA
Metcalf, ., Eddy, . (1972).
Wastewater Engineering : Treatment Disposal Reuse (Edisi 3).
Singapore:
McGraw-Hill Book Campany.
Gaya MLA
Metcalf, ., Eddy, .
"Wastewater Engineering : Treatment Disposal Reuse".
Edisi 3
Singapore:
McGraw-Hill Book Campany,
1972.
Text.