Gaya APA
LEUSCHNER, W, A. (1990).
Forest Regulation Harvest Scheduling, and Planning Techniques .
Bandung:
Gajah mada university press.
Gaya MLA
LEUSCHNER, William, A.
"Forest Regulation Harvest Scheduling, and Planning Techniques".
Bandung:
Gajah mada university press,
1990.
Text.