Gunarto Wardono, Mustofa Kamil, Rahmat Wijaya, Juhana Nuryana, Raliyanto Budi Wikarno and Hikmat Ansori 2026. The Effectiveness of Financial Services Authority Supervision of Leasing Companies from the Perspective of State Administrative Law. International Journal of Business and Quality Research. 4, 02 (May 2026), 396-413. DOI:https://doi.org/10.63922/ijbqr.v4i02.3535.