1. Ahmad, K. (1962). Principles of Islamic education, 2nd ed. Lahore: Islamic Publications.
2. Al-Djazairi, S. E. (2005). In the hidden debt to Islamic civilisation. Oxford: Bayt Al-Hikma Press.
3. Al-Faruqi, I. R. (1982). Tawhid: Its implications for thought and life. Kuala Lumpur: IIIT.
4. Al-Faruqi, I. R. & al-Faruqi, L. L. (1986). The cultural atlas of Islam. New York: Macmillan Publishing Company.
5. Allchin, D. (1988). Values in science and in science education. In B. J. Fraser & K. G. Tobin (Eds.), International handbook of science education, (Vol. 2, pp. 1083–1092). Dordrecht: Kluwer Academic Publishers.