Al Hathal، A. A. S.، و Healey، R. (2012). Implementing Digital Mapping and Database Technology to Assess the Spatial Distribution of the Secondary Schools and Students in Riyadh Saudi Arabia (رسالة ماجستير غير منشورة). University of Portsmouth، بورتسموث. مسترجع من http://search.mandumah.com/Record/604607
Al Hathal، Abd Allah Saleh، و Richard Healey. "Implementing Digital Mapping and Database Technology to Assess the Spatial Distribution of the Secondary Schools and Students in Riyadh Saudi Arabia" رسالة ماجستير. University of Portsmouth، بورتسموث، 2012. مسترجع من http://search.mandumah.com/Record/604607