Sutrisna, T. harto, S. Eko Pramono, and E. Supraptono. “Role of Principal As Innovator, Motivator, and Collaborator in the Implementation of School-Based Management”. Educational Management, Vol. 10, no. 2, Aug. 2021, pp. 283-8, https://journal.unnes.ac.id/sju/eduman/article/view/48576.