1. Ahmad, K. (1992). Nature and significance of Islamic economics. Jeddah: Islamic Development Bank.
2. Akhtar, M. (1992). An Islamic framework for employer-employee relationships. The American Journal Of Islamic Social Sciences, 9(2), 206–213.
3. Al Faruqi, I. R. (1980). Islam and labor in Islam and a new international economic order: A social dimension. In Proceedings of the symposium on ‘Islam and a new international economic order: the social dimension’, Geneva.
4. Al-Attas, S. M. N. (1995). Prolegomena to the metaphysics of Islam. Kuala Lumpur: ISTAC.
5. Al-Bukhari (1997), Translation of the meanings of Sahih Al-Bukhari, trans. M. M. Khan, (Riyadh, Darrusalam, references are to the number of hadiths).