Ali، A. M.، و Hipple، B. T. (1967). The Systems of Financial Administration in Saudi Arabia and New York State: A Study of Contrasts, with Special Reference to Preaudit (رسالة دكتوراه غير منشورة). University of Michigan، آنآربر. مسترجع من http://search.mandumah.com/Record/615012
Ali، Ahmed Mohamad، و Byron T. Hipple. "The Systems of Financial Administration in Saudi Arabia and New York State: A Study of Contrasts, With Special Reference to Preaudit" رسالة دكتوراه. University of Michigan، آنآربر، 1967. مسترجع من http://search.mandumah.com/Record/615012