Sutadiwiria, Yarra, Ahmad Helman Hamdani, Yoga Andriana Sendjaja, Iyan Haryanto, and Yeftamikha Yeftamikha. 2018. “Biomarker Composition of Some Oil Seeps from West Sulawesi, Indonesia”. Indonesian Journal on Geoscience 5 (3):211-20. https://doi.org/10.17014/ijog.5.3.211-220.