Asseri، A. M.، و Jacobs، F. (1997). A TRAINING MODEL TO ENHANCE THE EFFECTIVENESS OF SCHOOL PRINCIPALS IN ASEER EDUCATIONAL DISTRICT IN SAUDI ARABIA (رسالة دكتوراه غير منشورة). American University، واشنطن. مسترجع من http://search.mandumah.com/Record/620272
Asseri، Ahmed Mofarch، و Frcderic Jacobs. "A TRAINING MODEL TO ENHANCE THE EFFECTIVENESS OF SCHOOL PRINCIPALS IN ASEER EDUCATIONAL DISTRICT IN SAUDI ARABIA" رسالة دكتوراه. American University، واشنطن، 1997. مسترجع من http://search.mandumah.com/Record/620272