Gaya APA
Travis, William Penfield. (1966).
The theory of trade and protection .
Honolulu:
East-West Center Press.
Gaya Chicago
Travis, William Penfield.
The theory of trade and protection.
Honolulu:
East-West Center Press,
1966.
Text.
Gaya MLA
Travis, William Penfield.
The theory of trade and protection.
Honolulu:
East-West Center Press,
1966.
Text.
Gaya Turabian
Travis, William Penfield.
The theory of trade and protection.
Honolulu:
East-West Center Press,
1966.
Print.