Muhamad, N., & Ahmad, S. (2018). Analisis Frekuensi Kejadian Bencana Tanah Runtuh di Negara-negara Sedang Membangun: Frequency Analysis of Landslide Catastrophe in Developing Nations. GEOGRAFI, 2(2), 128-138. https://ejournal.upsi.edu.my/index.php/GEOG/article/view/487