Penggayaan APA
BIRDSALL, Stephen S.. (1992).
American geography .
New York:
John Wiley & Son.
Chicago Style
BIRDSALL, Stephen S..
American geography.
New York:
John Wiley & Son,
1992.
Buku.
MLA Style
BIRDSALL, Stephen S..
American geography.
New York:
John Wiley & Son,
1992.
Buku.
Turabian Style
BIRDSALL, Stephen S..
American geography.
New York:
John Wiley & Son,
1992.
Buku.