APA Style
Samuelson, Paul A; William D Nordhauss. (1993).
Economic Fourteenth Edition .
:
.
Chicago Style
Samuelson, Paul A; William D Nordhauss.
Economic Fourteenth Edition.
:
,
1993.
.
MLA Style
Samuelson, Paul A; William D Nordhauss.
Economic Fourteenth Edition.
:
,
1993.
.
Turabian Style
Samuelson, Paul A; William D Nordhauss.
Economic Fourteenth Edition.
:
,
1993.
.