APA Style
Valenzuela, Edwin E.. (2007).
Introduction to World Geography with Geo-Politics .
:
GBT.
Chicago Style
Valenzuela, Edwin E..
Introduction to World Geography with Geo-Politics.
:
GBT,
2007.
print.
MLA Style
Valenzuela, Edwin E..
Introduction to World Geography with Geo-Politics.
:
GBT,
2007.
print.
Turabian Style
Valenzuela, Edwin E..
Introduction to World Geography with Geo-Politics.
:
GBT,
2007.
print.