Gaya APA
Birdsall, S, S. et al
([s.a]).
Garis besar geografi Amerika
(
1)
.
NEW YORK:
Jhon Wiley & Sons.
Gaya MLA
Birdsall, Stephen, S.. et al.
"Garis besar geografi Amerika".
1
NEW YORK:
Jhon Wiley & Sons,
[s.a].
Text.