Hafiz، T. K.، و Fest، T. B. (1976). The potential role of education/instructional television in higher education and human resources development for the Kingdom of Saudi Arabia (رسالة دكتوراه غير منشورة). University of Colorado، بولدر. مسترجع من http://search.mandumah.com/Record/616901
Hafiz، Talal Khalid، و Thorrel B. Fest. "The Potential Role of Education/instructional Television in Higher Education and Human Resources Development for the Kingdom of Saudi Arabia" رسالة دكتوراه. University of Colorado، بولدر، 1976. مسترجع من http://search.mandumah.com/Record/616901