Muhammad Nafik Hadi Ryandono, Ida Wijayanti,. “Zakat institutions’ Mustahiq Transformation in Developing Countries: Comparison Study”. Opción 360 (April 24, 2020): 350-366. Accessed October 30, 2025. https://produccioncientifica.luz.edu.ve/index.php/opcion/article/view/31719.