Gaya APA
CASE, KARL E.. (2009).
PRINCIPLES OF ECONOMICS NINTH EDITION .
HONGKONG:
PRENTICE HALL.
Gaya Chicago
CASE, KARL E..
PRINCIPLES OF ECONOMICS NINTH EDITION.
HONGKONG:
PRENTICE HALL,
2009.
Text.
Gaya MLA
CASE, KARL E..
PRINCIPLES OF ECONOMICS NINTH EDITION.
HONGKONG:
PRENTICE HALL,
2009.
Text.
Gaya Turabian
CASE, KARL E..
PRINCIPLES OF ECONOMICS NINTH EDITION.
HONGKONG:
PRENTICE HALL,
2009.
Print.