Lasaiba, D., Ratumanan, T.G., Kempa, R. and Lokollo, L.J. 2026. Leadership of Madrasah Principals and Teacher Professional Development in State Islamic Senior High Schools in Maluku: A Preliminary Observational Study. Jurnal Pendidikan Geografi Unpatti. 3, 3 (Mar. 2026), 379–388. DOI:https://doi.org/10.30598/jpguvol3iss3pp379–388.