MANSOOR, dr.Ahmed. The State Theory and Economic Efficiency: A Model of Ibn Khaldoon A Comparative Study. TANMIYAT AL-RAFIDAIN, [S. l.], v. 31, n. 93, p. 78–103, 2009. DOI: 10.33899/tanra.2009.161830. Disponível em: https://edusj.uomosul.edu.iq/index.php/tanmiyat/article/view/29596. Acesso em: 10 sep. 2025.