APA Style

EP-PERTAMINA, L. (1984). Report on Petrographic Analysis of Rock Samples from Obi, North Maluku . Jakarta, Indonesia: P.T. Gondwana.

MLA Style

EP-PERTAMINA, LITBANG. "Report on Petrographic Analysis of Rock Samples from Obi, North Maluku". Jakarta, Indonesia: P.T. Gondwana, 1984. Book.