1. Abdul, M. M. Z. (1992). Syarat haul: Satu penilaian terhadap pandangan al- Qardawi dalam masalah zakat gaji dan pendapatan profesional Medium Vol. 2. Kuala Lumpur: Universiti Malaya.
2. Abdul, M. M. Z. (2003), Pengurusan zakat. Kuala Lumpur: Dewan Bahasa dan Pustaka.
3. Abioye, M.M.O. (2012), Exploratory Study of Nigerian Zakat Institutions and Role of Governance on Zakat Payers' Trust.
4. Abdul, A. M. (1987). Zakat and rural development in Malaysia – An ethical analysis of growth and income redistribution concepts. Unpublished thesis, Universiti Malaya, Malaysia
5. Al-Qardawi, Y. (2005). A comparative study of zakat regulations and philosophy in the light of the Qur'an and Sunnah. Saudi Arabia: Scientific Publishing Centre.