Gaya APA
Case, Karl E., Fair, Ray C.. (2004).
Principles of economics, 7th ed. (7th ed.).
New Jersey:
Prentice Hall.
Gaya Chicago
Case, Karl E., Fair, Ray C..
Principles of economics, 7th ed..
7th ed.
New Jersey:
Prentice Hall,
2004.
Text.
Gaya MLA
Case, Karl E., Fair, Ray C..
Principles of economics, 7th ed..
7th ed.
New Jersey:
Prentice Hall,
2004.
Text.
Gaya Turabian
Case, Karl E., Fair, Ray C..
Principles of economics, 7th ed..
7th ed.
New Jersey:
Prentice Hall,
2004.
Print.