Gaya APA

CCOP, . (1981). Assessment of undiscovered oil and gas . Kuala Lumpur Malaysia: Committe for Co-Ordination of Joint Prospecting (CCOP).

Gaya MLA

CCOP, . "Assessment of undiscovered oil and gas". Kuala Lumpur Malaysia: Committe for Co-Ordination of Joint Prospecting (CCOP), 1981. Prosiding/Procceding.