Hia, V. B. S., I. B. . Mochtar, and N. E. . Mochtar. “Analysis of Foam Mortar and Prefabricated Vertical Drain (PVD) Application for Soft Soil Improvement on the Aruk–Sp. Take Road Section, Sambas Regency, West Kalimantan”. Interdisciplinary Social Studies, vol. 5, no. 1, Dec. 2025, pp. 127-38, doi:10.55324/iss.v5i1.981.