Imam Razi's'ilm al-akhlaq : english translation of his kitab al-nafs wa'l-ruh wa sharh quwahuwa with introduction and commentary by M. Saghir Hasan Ma'sumi - al-Razi, Fakhr al-Din Muhammad ibn'Umar, 1149 or 50-1210 (Islamabad : Islamic Research Institute, 1969)