Gaya APA
Enke, Stephen, Salera, Virgil. (1957).
International economics .
New York:
Prentice Hall.
Gaya Chicago
Enke, Stephen, Salera, Virgil.
International economics.
New York:
Prentice Hall,
1957.
Text.
Gaya MLA
Enke, Stephen, Salera, Virgil.
International economics.
New York:
Prentice Hall,
1957.
Text.
Gaya Turabian
Enke, Stephen, Salera, Virgil.
International economics.
New York:
Prentice Hall,
1957.
Print.