Gaya APA
Essentials of World Regional Geography. (2008).
New York:
McGraw-Hill.
Gaya Chicago
Essentials of World Regional Geography.
Ed.2.
New York:
McGraw-Hill,
2008.
.
Gaya MLA
Essentials of World Regional Geography.
Ed.2.
New York:
McGraw-Hill,
2008.
.
Gaya Turabian
Essentials of World Regional Geography.
New York:
McGraw-Hill,
2008.
.