APA
(1980). National forest landscape management Timber. U.S: U.S. DEPARTPMENT.
Chicago
1980. National forest landscape management Timber. U.S: U.S. DEPARTPMENT.
Harvard
(1980). National forest landscape management Timber. U.S: U.S. DEPARTPMENT.
MLA
National forest landscape management Timber. U.S: U.S. DEPARTPMENT. 1980.