APA Style
Birdsall, S, S.
(1992).
Garis Besar Geografi Amerika
(
Ed.4)
.
Washington:
John Wiley & Sons, Inc.
MLA Style
Birdsall, Stephen, S..
"Garis Besar Geografi Amerika".
Ed.4
Washington:
John Wiley & Sons, Inc,
1992.
Text.