This is a good reading but it lacks reference to all the sources from which the ideological foundation of Islamic Economic System has been derived. If you are interested in a rational ideological background of Islamic Economics the following two books are also a must read:1. Society and Economics in Islam :Writings and Declarations of Sayyid Mahmud Taleghani by Sayyid Mahmud Taleghani, Prof. Hamid Algar (Editor) (available on amazon)2. Our Economy by Muhammad Baqir As-Sadr