APA Style

Birdsall, Stephen, Florin, John. (). Garis Besar Geografi Amerika . USA: U.S Departement of State.

Chicago Style

Birdsall, Stephen, Florin, John. Garis Besar Geografi Amerika. USA: U.S Departement of State, . .

MLA Style

Birdsall, Stephen, Florin, John. Garis Besar Geografi Amerika. USA: U.S Departement of State, . .

Turabian Style

Birdsall, Stephen, Florin, John. Garis Besar Geografi Amerika. USA: U.S Departement of State, . .