Nugroho, A. S. ., Saryanto, S. and Jumintono, J. (2026) “Principal Supervisory Management in Improving the Quality of Learning at SMP ”, Journal of Creative Power and Ambition (JCPA), 4(01), pp. 1015–1028. Available at: https://edujavare.com/index.php/jcpa/article/view/1373 (Accessed: 11 September 2026).