Gaya APA
Eckenfelder,Jr, W.
(1990).
INDRUSTRIAL WATER POLLUTION CONTROL
(
McGraw-hill)
.
:
THIRD EDITION.
Gaya MLA
Eckenfelder,Jr, W.Wesley.
"INDRUSTRIAL WATER POLLUTION CONTROL".
McGraw-hill
:
THIRD EDITION,
1990.
Text Book Industri.