Sakti, Hakim Erlangga Bernado. “Swelling-Shrinkage Behavior Analysis of Marl and Its Residual Soil at Sentolo Formation, Nanggulan, Kulon Progo”. Nusantara Civil Engineering Journal 2, no. 2 (October 24, 2023): 144 - 153. Accessed November 1, 2024. http://ojs.poltekba.ac.id/ojs/index.php/nuce/article/view/545.