Mahmoud Ali El-Zeiny, Rasha. “Interior Design Styles and Socio-Demographic Characteristics in Egypt: From the Concept of Zeitgeist”. Environment-Behaviour Proceedings Journal 1, no. 1 (June 26, 2016): 280-290. Accessed October 23, 2021. https://ebpj.e-iph.co.uk/index.php/EBProceedings/article/view/224.