Bronto, Sutikno, P. Asmoro, G. Hartono, and Sulistiyono Sulistiyono. “Evolution of Rajabasa Volcano in Kalianda Area and Its Vicinity, South Lampung Regency”. Indonesian Journal on Geoscience 7, no. 1 (March 28, 2012): 11–25. Accessed January 17, 2025. https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/132.