Widyaningsari, N., H. T. Tjendani, and S. Sajiyo. “Analysis of Additional Time Costs Construction of the Religious Court Office Building of Trenggalek Regency, East Java”. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE), Vol. 9, no. 1, Jan. 2026, pp. 2351-6, doi:10.31538/iijse.v9i1.9274.