Al Heezan، M. A. A.، و Hale، D. (1993). Comparative Analysis of Audience Exposure to the First Channel (Arabic) and to the Second Channel (English) in the Kingdom of Saudi Arabia (رسالة دكتوراه غير منشورة). Bowling Green State University، واشنطن. مسترجع من http://search.mandumah.com/Record/620120
Al Heezan، Mohammad Abd Alaziz، و Dennis Hale. "Comparative Analysis of Audience Exposure to the First Channel (Arabic) and to the Second Channel (English) in the Kingdom of Saudi Arabia" رسالة دكتوراه. Bowling Green State University، واشنطن، 1993. مسترجع من http://search.mandumah.com/Record/620120