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دليل المستخدم
AI Sahlawi، A. A. A. A.، و Costar، J. (1987). ROLE, SKILL, AND KNOWLEDGE PERCEPTIONS OF SENIOR HIGH SCHOOL PRINCIPALS IN AI-HASA AND EASTERN PROVINCE SCHOOL DISTRICTS IN THE EASTERN REGION OF SAUDI ARABIA (رسالة دكتوراه غير منشورة). Michigan State University، إيست لانسنيغ. مسترجع من http://search.mandumah.com/Record/615997
AI Sahlawi، Abd Alla Abd Alaziz، و James Costar. "ROLE, SKILL, AND KNOWLEDGE PERCEPTIONS OF SENIOR HIGH SCHOOL PRINCIPALS IN AI-HASA AND EASTERN PROVINCE SCHOOL DISTRICTS IN THE EASTERN REGION OF SAUDI ARABIA" رسالة دكتوراه. Michigan State University، إيست لانسنيغ، 1987. مسترجع من http://search.mandumah.com/Record/615997