Abd Alwahab، S. A. (1962). PACTA SUNT SERVANDA AND PEACEFUL CHANGE: A changing postulate of international law. مجلة مصر المعاصرة، مج53, ع310 ، 75 - 80. مسترجع من http://search.mandumah.com/Record/663509
Abd Alwahab، Salah Aldin. "PACTA SUNT SERVANDA AND PEACEFUL CHANGE: A Changing Postulate of International Law." مجلة مصر المعاصرة مج53, ع310 (1962): 75 - 80. مسترجع من http://search.mandumah.com/Record/663509