Adams, E., & Rollings, A. (2007). Fundamentals of Game Design. Pearson Prentice Hall.
Azaryahu, M., & E. Foote, K. (2008). Historical Space as Narrative Medium: On the Configuration of Spatial Narratives
of Time at Historical Sites. SpringerLink.
Boz´any, A. (2007). Heritage site area type classification for Facility Management purposes.
Buhalis, D., Weber, J., & Zhang, H. (2015). Tourists as Mobile Gamers: Gamification for Tourism Marketing. Journal of Travel & Tourism Marketing.
Geocaching. (2016). Geocaching Guidelines. Retrieved from https://www.geocaching.com/play/guidelines
Hunicke, R., LeBlanc, M., & Zubek , R. (2004). MDA: A Formal Approach to Game Design and Game Research, 5, International Journal of Heritage Studies, 277-293.
Malcolm-Davies. (2004). Borrowed robes: The educational value of costumed interpretation at historic sites.
Moustafa, S. L. (2011). Historic Cairo - Causes of deterioration and suggestions for preservation. In Old cultures in new worlds (pp. 762-767). Washington: 8th ICOMOS General Assembly and International Symposium.
Munir, A. (2014, September 10). App Monetization: 6 Bankable Business Models That Help Mobile Apps Make Money. Retrieved September 12, 2017, from http://info.localytics.com: http://info.localytics.com/blog/app-monetization-6-bankable-business-models-that-help-mobile-apps-make-money
Museum, T. B. (2016). Fieldnotes Storytelling.
Operating System Market Share Egypt. (n.d.). Retrieved September 22, 2017, from http://gs.statcounter.com/os-market-share/all/egypt
Sintoris, C., Yiannoutsou, N., Demetriou, S., & Avouris, N. (2013). Discovering the invisible city: Location-based
games for learning in smart cities. Interaction Design and Architecture(s) Journal, 47-64.