Gaya APA
Samuelson, Paul A.. (1980).
Economics (text).
London:
McGraw-Hill International.
Gaya Chicago
Samuelson, Paul A..
Economics.
text
London:
McGraw-Hill International,
1980.
.
Gaya MLA
Samuelson, Paul A..
Economics.
text
London:
McGraw-Hill International,
1980.
.
Gaya Turabian
Samuelson, Paul A..
Economics.
text
London:
McGraw-Hill International,
1980.
.