Gaya APA
Enger, E, D., Smith, B, F.
(2004).
ENVIRONMENTAL SCIENCE
(
EDISI 1 CET 1)
.
AS:
McGraw-Hill.Inc.
Gaya MLA
Enger, Eldon, D.., Smith, Bradley, F..
"ENVIRONMENTAL SCIENCE".
EDISI 1 CET 1
AS:
McGraw-Hill.Inc,
2004.
.