Al Shreef، A. A.، و Roche، P. (2010). THE CHALLENGE OF SAUDI MINISTRY OF HEALTH (MOH) TO PROTECT MILLIONS OF PILGRIMS AND RESIDENTS AGAINST MENINGOCOCCAL MENINGITIS DURING THE HAJJ (PILGRIMAGE) AND UMRAH SEASONS (رسالة ماجستير غير منشورة). RMIT University، ملبورن. مسترجع من http://search.mandumah.com/Record/745286
Al Shreef، Ahmed Ali، و Peter Roche. "THE CHALLENGE OF SAUDI MINISTRY OF HEALTH (MOH) TO PROTECT MILLIONS OF PILGRIMS AND RESIDENTS AGAINST MENINGOCOCCAL MENINGITIS DURING THE HAJJ (PILGRIMAGE) AND UMRAH SEASONS" رسالة ماجستير. RMIT University، ملبورن، 2010. مسترجع من http://search.mandumah.com/Record/745286