Gaya APA
Burns, R, M. (1983).
Silvicultural systems for the major forest types of the United States .
Washington:
U.S. Dapartement of Agriculture.
Gaya MLA
Burns, Russell, M..
"Silvicultural systems for the major forest types of the United States".
Washington:
U.S. Dapartement of Agriculture,
1983.
Printed Book.