Gaya APA
HUBBARD, R. Glenn. (2013).
Economics .
New York:
Pearson Education.
Gaya Chicago
HUBBARD, R. Glenn.
Economics.
New York:
Pearson Education,
2013.
Text.
Gaya MLA
HUBBARD, R. Glenn.
Economics.
New York:
Pearson Education,
2013.
Text.
Gaya Turabian
HUBBARD, R. Glenn.
Economics.
New York:
Pearson Education,
2013.
Print.