Gaya APA
Thielges, B, A. et al (2001).
In Situ and EX situ Concervation of Commercial Tropical Trees .
Yogyakarta:
GMU ITTO.
Gaya MLA
Thielges, Bart, A.. et al.
"In Situ and EX situ Concervation of Commercial Tropical Trees".
Yogyakarta:
GMU ITTO,
2001.
Text.