Kristie, Harry Jamatul, and Arif Budiman. “Karakteristik Sifat Fisis Tanah Daerah Potensi Longsor Di Jalan Raya Sumbar Riau Nagari Koto Alam, Sumatera Barat”. Jurnal Fisika Unand 10, no. 1 (February 17, 2021): 123–129. Accessed November 22, 2024. http://jfu.fmipa.unand.ac.id/index.php/jfu/article/view/645.