Hidayat, Rokhmat. “Slope Stability Analysis In Caok Village Landslide, Purworejo, Central Java”. JURNAL SUMBER DAYA AIR 14, no. 1 (July 10, 2018): 63–74. Accessed September 2, 2026. https://upgradeojs.rifqisyams.id/index.php/JSDA/article/view/195.