Manik, J., and M. Siahaan. “THE EFFECT OF PRINCIPAL MANAGERIAL SKILLS AND REWARDS ON TEACHER PERFORMANCE: THE ROLE OF TEACHER MOTIVATION AS A MEDIATION VARIABLE”. Tadbir: Jurnal Manajemen Pendidikan Islam, vol. 9, no. 2, Aug. 2021, pp. 145-63, doi:10.30603/tjmpi.v9i2.2267.