Gaya APA
Economics:Principles,Problems,And Policies. (2002).
New York:
[s.n.].
Gaya Chicago
Economics:Principles,Problems,And Policies.
.
New York:
[s.n.],
2002.
Text.
Gaya MLA
Economics:Principles,Problems,And Policies.
.
New York:
[s.n.],
2002.
Text.
Gaya Turabian
Economics:Principles,Problems,And Policies.
New York:
[s.n.],
2002.
Print.