Munawar, Wildan, and Qomaruddin S. 2016. “IMPLEMENTASI SISTEM MANAJEMEN MUTU ISO 9001:2008 DI BADAN AMIL ZAKAT NASIONAL”. Jurnal Syarikah : Jurnal Ekonomi Islam 2 (1). https://doi.org/10.30997/jsei.v2i1.265.