Gaya APA

(IPA), I, P, A. (1986). Fifteenth Annual Convention Indonesian Petroleum Association ; Proceedings - Volume 1 . Jakarta: Jakarta : Indonesian Petroleum Association,.

Gaya MLA

(IPA), Indonesia, Petroleum, Ass. "Fifteenth Annual Convention Indonesian Petroleum Association ; Proceedings - Volume 1". Jakarta: Jakarta : Indonesian Petroleum Association,, 1986. Text.