Al Yousef، S.، و Hughes، C. R. (2001). Geology and Hydrocarbon Potential of Central Arabia and Petrography, Diageneaia, and Reservoir quality of the Unayzah Formation, Central Saudi Arabia (رسالة ماجستير غير منشورة). University of Manchester، مانشستر. مسترجع من http://search.mandumah.com/Record/620771
Al Yousef، Sa'ad، و C. R. Hughes. "Geology and Hydrocarbon Potential of Central Arabia and Petrography, Diageneaia, and Reservoir Quality of the Unayzah Formation, Central Saudi Arabia" رسالة ماجستير. University of Manchester، مانشستر، 2001. مسترجع من http://search.mandumah.com/Record/620771