APA Style
GIESEN, W. (1991).
Wetlands of Giam-Siak kecil wildlife reserve, Riau, Sumatra: survey report .
:
Asian Wetland Bureau-Indonesia.
MLA Style
GIESEN, Wim.
"Wetlands of Giam-Siak kecil wildlife reserve, Riau, Sumatra: survey report".
:
Asian Wetland Bureau-Indonesia,
1991.
Text.