Gaya APA
Birdsall, Stephen S., John Florin. (1992).
Garis besar geografi amerika (Cet. 1).
United States:
united states department of state.
Gaya Chicago
Birdsall, Stephen S., John Florin.
Garis besar geografi amerika.
Cet. 1
United States:
united states department of state,
1992.
Text.
Gaya MLA
Birdsall, Stephen S., John Florin.
Garis besar geografi amerika.
Cet. 1
United States:
united states department of state,
1992.
Text.
Gaya Turabian
Birdsall, Stephen S., John Florin.
Garis besar geografi amerika.
Cet. 1
United States:
united states department of state,
1992.
Print.