APA Style

Puspoputro, B., Lubis, E. (1992). The Geophysical Case History of Rengasdengklok Area, Nort West Java (Proceedings Indonesian Petroleum Association , Twenty First Annual Convention, October 1992) . Jakarta: Indonesian Petroleum Association.

MLA Style

Puspoputro, Basuki., Lubis, Emir. "The Geophysical Case History of Rengasdengklok Area, Nort West Java (Proceedings Indonesian Petroleum Association , Twenty First Annual Convention, October 1992)". Jakarta: Indonesian Petroleum Association, 1992. Teknik.