APA Style
Geography : Regions and concepts. (1988).
New York:
John Wiley and Sons.
Chicago Style
Geography : Regions and concepts.
.
New York:
John Wiley and Sons,
1988.
Buku.
MLA Style
Geography : Regions and concepts.
.
New York:
John Wiley and Sons,
1988.
Buku.
Turabian Style
Geography : Regions and concepts.
New York:
John Wiley and Sons,
1988.
Buku.