Beyari، H.، و Hunter Jones، P. (2009). Marketing Tourism in Saudi Arabia: The Impact of Safety, Security and Terrorism Threats Upon Tourism Demand with Particular Reference to the Middle East (رسالة ماجستير غير منشورة). University of Liverpool، ليفربول. مسترجع من http://search.mandumah.com/Record/687636
Beyari، Hasan، و Philippa Hunter Jones. "Marketing Tourism in Saudi Arabia: The Impact of Safety, Security and Terrorism Threats Upon Tourism Demand With Particular Reference to the Middle East" رسالة ماجستير. University of Liverpool، ليفربول، 2009. مسترجع من http://search.mandumah.com/Record/687636