Gaya APA
Hubbard, R Glenn, O'Brien, Anthony Patrick. (2013).
Economics (14th Ed.).
England:
Pearson Education International.
Gaya Chicago
Hubbard, R Glenn, O'Brien, Anthony Patrick.
Economics.
14th Ed.
England:
Pearson Education International,
2013.
Text.
Gaya MLA
Hubbard, R Glenn, O'Brien, Anthony Patrick.
Economics.
14th Ed.
England:
Pearson Education International,
2013.
Text.
Gaya Turabian
Hubbard, R Glenn, O'Brien, Anthony Patrick.
Economics.
14th Ed.
England:
Pearson Education International,
2013.
Print.