Widada, Sugeng, et al. “Influence of Depositional Environment on Source Rock Potential: A Case Study of Fluvio-Estuarine Sediments in the Lower Tanjung Formation, Martapura Area, Barito Basin, South Kalimantan”. Jurnal Offshore: Oil, Production Facilities and Renewable Energy, vol. 10, no. 1, June 2026, pp. 29-45, doi:10.30588/jo.v10i1.2686.