APA Style
Birdsall, Stephen S. (1991).
Geografi Amerika .
:
John Wiley & Son.
Chicago Style
Birdsall, Stephen S.
Geografi Amerika.
:
John Wiley & Son,
1991.
Printed Book.
MLA Style
Birdsall, Stephen S.
Geografi Amerika.
:
John Wiley & Son,
1991.
Printed Book.
Turabian Style
Birdsall, Stephen S.
Geografi Amerika.
:
John Wiley & Son,
1991.
Printed Book.