Siswandi, Siswandi, Asmoro Widagdo, Mochammad Aziz, Adi Candra, Januar Aziz Zaenurrohman, & Akhmad Khahlil Gibran. " Magma Evolution in The Formation of Lava Tube at Goa Lawa Purbalingga." Proceeding ICMA-SURE [Online], (2024): 324-330. Web. 29 Aug. 2025