Akbar، F. I.، و O'neill، W. F. (1988). SAUDI ELEMENTARY SCHOOL PRINCIPALS' LEADERSHIP BEHAVIOR AS PERCEIVED BY PRINCIPALS AND TEACHERS (رسالة دكتوراه غير منشورة). University of Southern California، لوس أنجلوس. مسترجع من http://search.mandumah.com/Record/613884
Akbar، Faisal Ismail، و William F. O'neill. "SAUDI ELEMENTARY SCHOOL PRINCIPALS' LEADERSHIP BEHAVIOR AS PERCEIVED BY PRINCIPALS AND TEACHERS" رسالة دكتوراه. University of Southern California، لوس أنجلوس، 1988. مسترجع من http://search.mandumah.com/Record/613884