Munawar, W., R. A. Pangestu, and Qomaruddin S. “Waqf Manager (Nazir) Coaching and Competence in The Development of Productive Waqf”. Indonesian Journal of Social Research (IJSR), Vol. 4, no. 1, Apr. 2022, pp. 22-31, doi:10.30997/ijsr.v4i1.176.