Gaya APA
International Economics and Business. (1968).
Amerika:
Houghton Mifflin Company.
Gaya Chicago
International Economics and Business.
.
Amerika:
Houghton Mifflin Company,
1968.
.
Gaya MLA
International Economics and Business.
.
Amerika:
Houghton Mifflin Company,
1968.
.
Gaya Turabian
International Economics and Business.
Amerika:
Houghton Mifflin Company,
1968.
.