Al Bar، A.، و Shaw، I. (2008). A Triangulated Multi-Sites Case Study of Abandoned Young People in Residential Care and Care Leavers in Saudi Arabia (رسالة دكتوراه غير منشورة). University of York، يورك. مسترجع من http://search.mandumah.com/Record/610630
Al Bar، Ahmed، و Ian Shaw. "A Triangulated Multi-Sites Case Study of Abandoned Young People in Residential Care and Care Leavers in Saudi Arabia" رسالة دكتوراه. University of York، يورك، 2008. مسترجع من http://search.mandumah.com/Record/610630