Alabd Alhadi، A. A. S.، و Al Berty، E. J. (1989). PROGRAM ARTICULATION BETWEEN SECONDARY SCHOOLS AND UNIVERSITIES AS PERCEIVED BY SCIENCE TEACHERS IN SAUDI ARABIA (رسالة دكتوراه غير منشورة). Ohio State University، كولومبوس. مسترجع من http://search.mandumah.com/Record/613933
Alabd Alhadi، Abd Alhadi Saad، و Elsie J. Al Berty. "PROGRAM ARTICULATION BETWEEN SECONDARY SCHOOLS AND UNIVERSITIES AS PERCEIVED BY SCIENCE TEACHERS IN SAUDI ARABIA" رسالة دكتوراه. Ohio State University، كولومبوس، 1989. مسترجع من http://search.mandumah.com/Record/613933