M. Muhsin, S. Martono, K. Kusumantoro, A. Nurkhin, and A. Hobar, “IMPROVING THE LEADERSHIP COMPETENCY OF PONDOK PESANTREN TEACHERS THROUGH GROWING LEADERSHIP TRAINING IN FACING THE CHALLENGES OF THE DIGITAL ERA”, IJDE, vol. 3, no. 1, pp. 16-20, Jun. 2021.