Gaya APA
Internasional Economics. (2008).
USA:
CENGAGE LEARNING.
Gaya Chicago
Internasional Economics.
.
USA:
CENGAGE LEARNING,
2008.
Text.
Gaya MLA
Internasional Economics.
.
USA:
CENGAGE LEARNING,
2008.
Text.
Gaya Turabian
Internasional Economics.
USA:
CENGAGE LEARNING,
2008.
Print.