KARURUKAN, Leonard Zeth; WONG, Irwan Lie Keng; SANGLE, Pebrinar Riani. Pengaruh Penambahan Ampas Kopi pada Tanah Lempung TerhadapDaya Dukung Tanah. Paulus Civil Engineering Journal, Makassar, I.D., v. 4, n. 3, p. 375–382, 2024. DOI: 10.52722/fwn07r74. Disponível em: https://ojs.ukipaulus.ac.id/index.php/pcej/article/view/133. Acesso em: 24 jul. 2025.