Al Shehri، H. R.، و Blackman، C. A. (1986). An Exploratory Study of Selected Andragogical and Pedagogical Variables Related To Teacher Preferences for Approaches to Their Continued Learning (رسالة دكتوراه غير منشورة). Michigan State University، إيست لانسنيغ. مسترجع من http://search.mandumah.com/Record/616024
Al Shehri، Hasen Rafea، و Charles A. Blackman. "An Exploratory Study of Selected Andragogical and Pedagogical Variables Related To Teacher Preferences for Approaches to Their Continued Learning" رسالة دكتوراه. Michigan State University، إيست لانسنيغ، 1986. مسترجع من http://search.mandumah.com/Record/616024