Al Towaijri، A. O.، و Rوs، R. (1983). Academic Freedom in Islam and the West: A Study of the Philosophical Foundations of Academic Freedom in Islam and the Western Liberal Philosophy (رسالة دكتوراه غير منشورة). University of Oregon، يوجين. مسترجع من http://search.mandumah.com/Record/619256
Al Towaijri، Ahmed O.، و Ralph Rوs. "Academic Freedom in Islam and the West: A Study of the Philosophical Foundations of Academic Freedom in Islam and the Western Liberal Philosophy" رسالة دكتوراه. University of Oregon، يوجين، 1983. مسترجع من http://search.mandumah.com/Record/619256