Kosasih, K., B. V. F. Freitas, U. N. Melin, R. A. Sari, and E. Krisdayanti. “The Impact of Transformational Leadership Style and Employee Development on Performance Effectiveness”. Business and Applied Management Journal, vol. 3, no. 2, Dec. 2025, pp. 338-4, doi:10.61987/bamj.v3i2.1637.