Ahmad Rifai Siregar, Jodi Mahmud Siregar, Nadya Ramadhani, Nur Halimah Matondang, Arif Rahman, and Deny Setiawan. “Exploration of The Principal’s Transformational Leadership Style In Increasing Teacher Motivation”. Didaktika: Jurnal Kependidikan, Vol. 13, no. 2, May 2024, pp. 1655-62, doi:10.58230/27454312.708.