Sutrisna, Tri harto, Suwito Eko Pramono, and Eko Supraptono. 2021. “Role of Principal As Innovator, Motivator, and Collaborator in the Implementation of School-Based Management”. Educational Management 10 (2), 283-88. https://journal.unnes.ac.id/sju/eduman/article/view/48576.