Omar، A. A. S.، و Smith، W. (1981). THE EFFECT OF USING DIAGNOSTIC-PRESCRIPTIVE TEACHING ON ACHIEVEMENT IN SCIENCE OF SAUDI ARABIAN HIGH SCHOOL STUDENTS (رسالة دكتوراه غير منشورة). University of Kansas، لورانس. مسترجع من http://search.mandumah.com/Record/619262
Omar، Abd Alaziz Saud، و Walter Smith. "THE EFFECT OF USING DIAGNOSTIC-PRESCRIPTIVE TEACHING ON ACHIEVEMENT IN SCIENCE OF SAUDI ARABIAN HIGH SCHOOL STUDENTS" رسالة دكتوراه. University of Kansas، لورانس، 1981. مسترجع من http://search.mandumah.com/Record/619262