Al Seflan، A. M.، و Blair، G. S. (1980). THE ESSENCE OF TRIBAL LEADERS PARTICIPATION RESPONSIBILITIES, AND DECISIONS IN SOME LOCAL GOVERNMENT ACTIVITIES IN SAUDI ARABIA: A CASE STUDY OF THE GHAMID AND ZAHRAN TRIBES (رسالة دكتوراه غير منشورة). Claremont Graduate University، كلاريمونت. مسترجع من http://search.mandumah.com/Record/613345
Al Seflan، Ali Mashhoor، و George S. Blair. "THE ESSENCE OF TRIBAL LEADERS PARTICIPATION RESPONSIBILITIES, AND DECISIONS IN SOME LOCAL GOVERNMENT ACTIVITIES IN SAUDI ARABIA: A CASE STUDY OF THE GHAMID AND ZAHRAN TRIBES" رسالة دكتوراه. Claremont Graduate University، كلاريمونت، 1980. مسترجع من http://search.mandumah.com/Record/613345