Gaya APA
J., B., W., S., B., A. (2009).
Economics: Principles and Policy. Eleventh Edition (Ed.Ke-7).
China:
South-Western.
Gaya MLA
Baumol, William, J.., Blinder, Alan, S..
"Economics: Principles and Policy. Eleventh Edition".
Ed.Ke-7
China:
South-Western,
2009.
Textbook.