| 1) | Muhammad al-Khudari, Tarikh al-Tashri al-Islami (Cairo: al-Maktabah al-Tujariyah al-Kubra, 1970) |
| 2) | Abd-al-Rahman Azzam, The Eternal Message of Muhammad, (USA, Mentors Book, 1964) |
| 3) | Taqi al-din Ahmad Ibn Taymayyah, al-Siysah al-Shariyah fi Islah al-Rai wa al-Raiyah, |
| 4) | Gamal Himdan, the Contemporary Islamic World |
| 5) | Abi Hamid Al-Ghazzali, Nasihat al-Muluk. |
| 6) | Ibn Khaldun, Muqaddamah, |
| 7) | Al-Qadi Abi Yali Muhammad Ibn al-Hussiyan al-Faraa, al-Ahkam al-Sultaniyah. (Cairo, Maktabat |
| al-Qur'an, 1996) |
| 8) | Hammudah Abd al-'Ati, Islam in Focus |