Gaya APA
Introduction To Geography. (2011).
New York:
MCGraw Hill Book Company.
Gaya Chicago
Introduction To Geography.
Ed. 13.
New York:
MCGraw Hill Book Company,
2011.
.
Gaya MLA
Introduction To Geography.
Ed. 13.
New York:
MCGraw Hill Book Company,
2011.
.
Gaya Turabian
Introduction To Geography.
New York:
MCGraw Hill Book Company,
2011.
.