Gaya APA
Outline of American geography. (1992).
Malang:
Jhon Wiley & Sons.
Gaya Chicago
Outline of American geography.
.
Malang:
Jhon Wiley & Sons,
1992.
Text.
Gaya MLA
Outline of American geography.
.
Malang:
Jhon Wiley & Sons,
1992.
Text.
Gaya Turabian
Outline of American geography.
Malang:
Jhon Wiley & Sons,
1992.
Print.