Beladas, Jean P., and Eden C. Callo. “Effective Leadership and Supervisory Skills of Principal: Predictors of Job Satisfaction Among Public Elementary School Teachers”. International Journal of Multidisciplinary: Applied Business and Education Research, vol. 4, no. 12, Dec. 2023, pp. 4363-78, https://doi.org/10.11594/ijmaber.04.12.17.