Gaya APA
CUNNINGHAM, WILLIAAM. (2008).
PRINCIPLES OF ENVIRONMENTAL SCIENCE (4).
New York:
McGraw-Hill.
Gaya Chicago
CUNNINGHAM, WILLIAAM.
PRINCIPLES OF ENVIRONMENTAL SCIENCE.
4
New York:
McGraw-Hill,
2008.
Text.
Gaya MLA
CUNNINGHAM, WILLIAAM.
PRINCIPLES OF ENVIRONMENTAL SCIENCE.
4
New York:
McGraw-Hill,
2008.
Text.
Gaya Turabian
CUNNINGHAM, WILLIAAM.
PRINCIPLES OF ENVIRONMENTAL SCIENCE.
4
New York:
McGraw-Hill,
2008.
Print.