Gaya APA
International Business. (2004).
New York:
MC GRAW HILL.
Gaya Chicago
International Business.
Edisi 9.
New York:
MC GRAW HILL,
2004.
.
Gaya MLA
International Business.
Edisi 9.
New York:
MC GRAW HILL,
2004.
.
Gaya Turabian
International Business.
New York:
MC GRAW HILL,
2004.
.