Althaf, Muhammad Mahdy, Syafriani Syafriani, and Harman Amir Zulhendra. “Subsurface Lithology Analysis Using HVSR Method in Jorong Ranah, X Koto Singkarak District”. Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) 6, no. 2 (May 7, 2025): 992–1001. Accessed October 9, 2025. https://jpfis.unram.ac.id/index.php/GeoScienceEdu/article/view/818.