Lestin, Almiga Kristha, Meti, and Ika Apriyani. “Pengaruh Penambahan Limbah Ampas Kopi Terhadap Kuat Geserpada Tanah”. Paulus Civil Engineering Journal 4, no. 3 (January 17, 2024): 359–366. Accessed July 24, 2025. https://ojs.ukipaulus.ac.id/index.php/pcej/article/view/131.