Gaya APA
Smith, Allen W.. (1986).
Understanding economics .
San Francisco:
Random House.
Gaya Chicago
Smith, Allen W..
Understanding economics.
San Francisco:
Random House,
1986.
Text.
Gaya MLA
Smith, Allen W..
Understanding economics.
San Francisco:
Random House,
1986.
Text.
Gaya Turabian
Smith, Allen W..
Understanding economics.
San Francisco:
Random House,
1986.
Print.