Fera, N., Efendi, Butarbutar, M., Sherly, & Silalahi, M. (2026). The Influence of Green Leadership, Emotional Intelligence, and 21st-Century Competence on Teacher Performance at the Sultan Agung Education Foundation in Pematangsiantar. The International Journal of Advanced Technology and Social Sciences, 4(10), 1289–1302. https://doi.org/10.59890/ijatss.v4i10.3