Hasibuan, Dina Sari, Ifdlol Amarullah Hasibuan, Mariam Ulfah, Julmahdi Siregar, and Amin Harahap. 2026. “Principal Leadership Strategies in Improving Teacher Performance: A Literature Review”. TOFEDU: The Future of Education Journal 5 (1):1119-23. https://doi.org/10.61445/tofedu.v5i1.1645.