Gaya APA
Birdsall, Stephen S, Florin, Jhon, Gembirasari. ([s.a]).
Geografi Amerika (-).
[s.l]:
United States Departement of State.
Gaya Chicago
Birdsall, Stephen S, Florin, Jhon, Gembirasari.
Geografi Amerika.
-
[s.l]:
United States Departement of State,
[s.a].
Text.
Gaya MLA
Birdsall, Stephen S, Florin, Jhon, Gembirasari.
Geografi Amerika.
-
[s.l]:
United States Departement of State,
[s.a].
Text.
Gaya Turabian
Birdsall, Stephen S, Florin, Jhon, Gembirasari.
Geografi Amerika.
-
[s.l]:
United States Departement of State,
[s.a].
Print.