Al Hadhrami، W. O.، و Macbeth، J. (2004). AN INVESTIGATION OF LEADERSHIP STYLES OF MALE OUTDOOR EDUCATION INSTRUCTORS IN THE SCHOOL SYSTEMS OF JEDDAH, MADINAH, AND RIYADH IN SAUDI ARABIA (رسالة دكتوراه غير منشورة). Middle Tennessee State University، كوكفل. مسترجع من http://search.mandumah.com/Record/620419
Al Hadhrami، Wael O.، و Jon Macbeth. "AN INVESTIGATION OF LEADERSHIP STYLES OF MALE OUTDOOR EDUCATION INSTRUCTORS IN THE SCHOOL SYSTEMS OF JEDDAH, MADINAH, AND RIYADH IN SAUDI ARABIA" رسالة دكتوراه. Middle Tennessee State University، كوكفل، 2004. مسترجع من http://search.mandumah.com/Record/620419