Ginanjar, Fajar Ahmad, Hasan Hariri, Sowiyah Sowiyah, and Riswanti Rini. “The Effect of Principal Transformational Leadership on Teacher Performance to Improve Student Achievement: A Literature Review”. Edumaspul: Jurnal Pendidikan 8, no. 1 (March 1, 2024). Accessed April 5, 2026. https://jurnal.unimen.cloud/index.php/maspuljr/article/view/5809.