APA Style
Samuelson, Pail A; William D Nordhaus. (1992).
Economics Fourteenth Edition .
:
.
Chicago Style
Samuelson, Pail A; William D Nordhaus.
Economics Fourteenth Edition.
:
,
1992.
.
MLA Style
Samuelson, Pail A; William D Nordhaus.
Economics Fourteenth Edition.
:
,
1992.
.
Turabian Style
Samuelson, Pail A; William D Nordhaus.
Economics Fourteenth Edition.
:
,
1992.
.