Gaya APA
Samuelson, Paul.A. (2001).
Economics .
Toronto:
McGraw-Hill.
Gaya Chicago
Samuelson, Paul.A.
Economics.
Toronto:
McGraw-Hill,
2001.
Text.
Gaya MLA
Samuelson, Paul.A.
Economics.
Toronto:
McGraw-Hill,
2001.
Text.
Gaya Turabian
Samuelson, Paul.A.
Economics.
Toronto:
McGraw-Hill,
2001.
Print.