Gaya APA
Sundstrom, D, W., Klei, H, E.
(1979).
Wastewater Treatmen
.
London:
Prentice-Hall Inc.
Gaya MLA
Sundstrom, Donald, W.., Klei, Herbert, E..
"Wastewater Treatmen".
London:
Prentice-Hall Inc,
1979.
Text.