Al Rushood، R. M. (2002). The Poet and the Tribe in the Jahili Period: A Study of the relationship between the Poets and their tribes in the Light of tribal affiliation (رسالة دكتوراه غير منشورة). University of Leeds، ليدز. مسترجع من http://search.mandumah.com/Record/599214
Al Rushood، Rashed Mubarak. "The Poet and the Tribe in the Jahili Period: A Study of the Relationship between the Poets and Their Tribes in the Light of Tribal Affiliation" رسالة دكتوراه. University of Leeds، ليدز، 2002. مسترجع من http://search.mandumah.com/Record/599214