Rifai, Muhamad, Endang Purwanti, and Nurkolis Nurkolis. “Principal Instructional Leadership: Implications for Curriculum Design, Implementation, and Evaluation”. Curricula: Journal of Curriculum Development 4, no. 2 (December 26, 2025): 1859–1876. Accessed August 16, 2026. https://ejournal-education.upi.edu/curricula/article/view/562.