Gaya APA
Williamson, Stephen D. (2011).
Macroeconomics (Ed. 4).
United State America:
Pearson Education.
Gaya Chicago
Williamson, Stephen D.
Macroeconomics.
Ed. 4
United State America:
Pearson Education,
2011.
Text.
Gaya MLA
Williamson, Stephen D.
Macroeconomics.
Ed. 4
United State America:
Pearson Education,
2011.
Text.
Gaya Turabian
Williamson, Stephen D.
Macroeconomics.
Ed. 4
United State America:
Pearson Education,
2011.
Print.