Taufiqi, Muhammad, Sri Mulatsih, and Hendro Sasongko. 2026. “Determinants of Subnational Own-Source Revenue Performance: A Six-Cluster Analysis of East Java, Indonesia”. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE) 9 (2), 16098-110. https://doi.org/10.31538/iijse.v9i2.9847.