Simon Róbert: Ibn Khaldūn. History as science and the patrimonial empire - Bibliotheca orientalis Hungarica 48. (Budapest, 2002)
IBN KHALDÜN History as Science and the Patrimonial Empire by ROBERT SIMON AKADÉMIAI KIADÓ, BUDAPEST
IBN KHALDÜN History as Science and the Patrimonial Empire by ROBERT SIMON AKADÉMIAI KIADÓ, BUDAPEST