APA Style
Heilbroner, Robert R; James K Galbrath. (2006).
The Economics Problem . Ninth Edition .
:
.
Chicago Style
Heilbroner, Robert R; James K Galbrath.
The Economics Problem . Ninth Edition.
:
,
2006.
.
MLA Style
Heilbroner, Robert R; James K Galbrath.
The Economics Problem . Ninth Edition.
:
,
2006.
.
Turabian Style
Heilbroner, Robert R; James K Galbrath.
The Economics Problem . Ninth Edition.
:
,
2006.
.