Gaya APA
Essentials of World Regional Geography. (2011).
New York:
McGraw-Hill.
Gaya Chicago
Essentials of World Regional Geography.
second.
New York:
McGraw-Hill,
2011.
.
Gaya MLA
Essentials of World Regional Geography.
second.
New York:
McGraw-Hill,
2011.
.
Gaya Turabian
Essentials of World Regional Geography.
New York:
McGraw-Hill,
2011.
.