Gaya APA
Nayoan, G, A, S. (1998).
1997 Presentations on natuna D-Alpha gas project and upstream related .
Jakarta:
Jakarta :Pertamina,.
Gaya MLA
Nayoan, G, A, S.
"1997 Presentations on natuna D-Alpha gas project and upstream related".
Jakarta:
Jakarta :Pertamina,,
1998.
Text.