Harbowo, Danni Gathot, and Eri Sarmantua Sitinjak. “The Foraminifera Fossil Record of the Sedimentary Rock at Kotadjawa, Lampung, Indonesia: The Significance of Marine Paleontological Insight”. Jurnal Riset Biologi dan Aplikasinya 6, no. 2 (September 30, 2024): 116–223. Accessed June 14, 2025. https://journal.unesa.ac.id/index.php/risetbiologi/article/view/30599.