DARMAN, Herman. East Kalimantan Program. Berita Sedimentologi, [S. l.], v. 21, n. 1, p. 40–43, 2021. DOI: 10.51835/bsed.2011.21.1.211. Disponível em: https://journal.iagi.or.id/index.php/FOSI/article/view/211. Acesso em: 30 oct. 2026.