LUTVIANA; TRIHANTOYO, S.; HARIYATI, N. Transformational Leadership of School Principals in Optimizing the Management of Teacher E-Performance Through Ruang GTK: A Multi-Site Study at SMP Negeri 2 Plaosan and SMP Negeri 1 Takeran. Journal of Mathematics Instruction, Social Research and Opinion, Bandung, Indonesia, v. 5, n. 3, p. 2351–2358, 2026. DOI: 10.58421/misro.v5i3.2127. Disponível em: https://journal-gehu.com/index.php/misro/article/view/2127. Acesso em: 8 nov. 2026.