Gaspersz, Gabriela C. N. “Miocene Planktonic Foraminifera of Calcareous Sandstone Unit in Pamutuan Formation West Java, Indonesia”. Proceedings of the International Conference of Geological Engineering Faculty 1, no. 1 (August 22, 2021): 1–9. Accessed March 29, 2024. http://tiikmpublishing.com/proceedings/index.php/icgef/article/view/751.