Emmi Kholilah Harahap, and Sumarto Sumarto. “Educational Supervision With Scientific Methods in Improving Student Learning Outcomes and the Performance of High-Achieving Teachers”. Attractive : Innovative Education Journal 8, no. 2 (August 5, 2026): 687–696. Accessed August 28, 2026. https://attractivejournal.com/index.php/aj/article/view/2325.