Gaya APA
Principles of micro economis. (2004).
New York:
[s.n.].
Gaya Chicago
Principles of micro economis.
Ed. 2.
New York:
[s.n.],
2004.
Text.
Gaya MLA
Principles of micro economis.
Ed. 2.
New York:
[s.n.],
2004.
Text.
Gaya Turabian
Principles of micro economis.
New York:
[s.n.],
2004.
Print.