Gaya APA

Association, I, P. (1991). TWENTIETH ANNUAL CONVENTION Building for the Future - Proceedings Of The Twentieth Annual Convention Jakarta 8th - 10th October 1991Volume II-Engineering, HRD, Economics And Environmental . Jakarta: INDONESIA PETROLEUM ASSOCIATIO.

Gaya MLA

Association, Indonesian, Petroleum. "TWENTIETH ANNUAL CONVENTION Building for the Future - Proceedings Of The Twentieth Annual Convention Jakarta 8th - 10th October 1991Volume II-Engineering, HRD, Economics And Environmental". Jakarta: INDONESIA PETROLEUM ASSOCIATIO, 1991. Text.