SAKHRIADI, Sakhriadi; MARTHA, Alfroki; YULASTRI, Weni. Developing a Collaborative Managerial Supervision Model by Principals to Enhance Instructional Management Quality in Elementary Schools. Journal of Education Research, [S. l.], v. 7, n. 2, p. 781–788, 2026. DOI: 10.37985/jer.v7i2.3641. Disponível em: https://mail.jer.or.id/index.php/jer/article/view/3641. Acesso em: 1 jul. 2026.