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دليل المستخدم
Al Oushan، A. A. A.، و Hughes، S. (1987). Administrative Behaviors of Effective Educational Leaders As Perceived by Saudi Arabian Secondary School Principals (رسالة دكتوراه غير منشورة). University of Pittsburgh، بيتسبرغ. مسترجع من http://search.mandumah.com/Record/611554
Al Oushan، Abd Alaziz A.، و Sean Hughes. "Administrative Behaviors of Effective Educational Leaders As Perceived By Saudi Arabian Secondary School Principals" رسالة دكتوراه. University of Pittsburgh، بيتسبرغ، 1987. مسترجع من http://search.mandumah.com/Record/611554