Tarek Abdel Azim Ahmed and  Eman Sarhan Shaker,  Website Evaluation of Travel Agencies Class A in Saudi Arabia and Egypt Using Extended Version of Internet Commerce Adoption Model: A Comparative Study.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2021, vol. 172(4). 453 - 461
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10011976.