1. Ahmad, I. 2005. Islam, Commerce, and Business Ethics. In Business and Religion: A Clash of Civilizations? ed. N. Capaldi. Salem: M & M Scrivener Press.
2. Al-Suhrawardy, Abdullah Al-Mamun. 2001. The Wisdom of Muhammad. London: Citadel Press.
3. Anderson, Gary A. 2013. Charity: The Place of the Poor in the Biblical Tradition. New Haven: Yale University Press.
4. Arberry, A.J. 1996. The Koran Interpreted. New York: Simon & Schuster.
5. As-Sadr, Muhammad Baqir. 1984. Iqtisaduna. Tehran: World Organization for Islamic Services.