APA Style
Gregory, G. Robinson. (1980).
Forest Resources Economics .
:
.
Chicago Style
Gregory, G. Robinson.
Forest Resources Economics.
:
,
1980.
.
MLA Style
Gregory, G. Robinson.
Forest Resources Economics.
:
,
1980.
.
Turabian Style
Gregory, G. Robinson.
Forest Resources Economics.
:
,
1980.
.