Sabri, Hisham, Muhamad Muda, and Nur Adilah Othman. 2006. “Penjanaan Ekonomi Umat Islam Melalui Kaedah Istibdal Dalam Pembangunan Harta Wakaf”. The Journal of Muamalat and Islamic Finance Research 3 (1):203-22. https://jmifr.usim.edu.my/index.php/jmifr/article/view/61.