APA Style
Fontaine, H., Gafoer, S. (1989).
The Pre-Tertiary Fossils of Sumatra and Their Environments .
Bangkok:
CCOP Technical Secretariat.
MLA Style
Fontaine, Henri., Gafoer, Suudi.
"The Pre-Tertiary Fossils of Sumatra and Their Environments".
Bangkok:
CCOP Technical Secretariat,
1989.
Teknik.