Mahdi, M., & Butterworth, C. E. (1992). The Political aspects of Islamic philosophy: Essays in honor of Muhsin S. Mahdi. Distributed for the Center for Middle Eastern Studies of Harvard University by Harvard University Press.

Mahdi, Muhsin, and Charles E. Butterworth. The Political Aspects of Islamic Philosophy: Essays in Honor of Muhsin S. Mahdi. Cambridge, Mass.: Distributed for the Center for Middle Eastern Studies of Harvard University by Harvard University Press, 1992.

Mahdi, Muhsin, and Charles E. Butterworth. The Political Aspects of Islamic Philosophy: Essays in Honor of Muhsin S. Mahdi. Distributed for the Center for Middle Eastern Studies of Harvard University by Harvard University Press, 1992.