Gaya APA
Samuelson, Paul.A. ().
ECONOMICS (18th edition).
New York:
McGraw-Hill Higher.
Gaya Chicago
Samuelson, Paul.A.
ECONOMICS.
18th edition
New York:
McGraw-Hill Higher,
.
Text.
Gaya MLA
Samuelson, Paul.A.
ECONOMICS.
18th edition
New York:
McGraw-Hill Higher,
.
Text.
Gaya Turabian
Samuelson, Paul.A.
ECONOMICS.
18th edition
New York:
McGraw-Hill Higher,
.
Print.