Dubis، S. A. A.، و Good، R. (1987). Educators' Attitudes Toward Children with Handicaps and the Concept of Mainstreaming' in the Kingdom of Saudi Arabia (رسالة دكتوراه غير منشورة). University of Pittsburgh، بيتسبرغ. مسترجع من http://search.mandumah.com/Record/611454
Dubis، Said Abd Allah، و Rolو Good. "Educators' Attitudes Toward Children With Handicaps and the Concept of Mainstreaming' in the Kingdom of Saudi Arabia" رسالة دكتوراه. University of Pittsburgh، بيتسبرغ، 1987. مسترجع من http://search.mandumah.com/Record/611454