Citazione Stile APA (7a Edizione)

Fontaine, H., & Gafoer, S. (1989). The pre-Tertiary fossils of Sumatra and their environments. Issued by CCOP Technical Secretariat.

Citazione stile Chigago Style (17a edizione)

Fontaine, Henri, e Suudi Gafoer. The Pre-Tertiary Fossils of Sumatra and Their Environments. Bangkok, Thailand: Issued by CCOP Technical Secretariat, 1989.

Citatione MLA (9a ed.)

Fontaine, Henri, e Suudi Gafoer. The Pre-Tertiary Fossils of Sumatra and Their Environments. Issued by CCOP Technical Secretariat, 1989.