Darman, Herman, Dwandari Ralanarko, and Sugeng Sapto Surjono. “Indonesian Stratigraphic Nomenclature Revision: The First Progress Report”. Berita Sedimentologi 47, no. 2 (October 2, 2021): 80–86. Accessed October 30, 2026. https://journal.iagi.or.id/index.php/FOSI/article/view/39.