Required:
[1] Buckley, A. (2012). Make Maps People Want to Look At. ESRI 46-51.
Optional:
[2] Kosara, R., & Mackinlay, J. (2013). Storytelling: The next step for visualization. Computer (5), 44-50.
[3] Bafic Web Design Principles. retrieved December 20, 2016 from http://umich.edu/~ece/resources/design.html
[4] Ruluks S. (2014) 9 basic principles of responsive web design. retrieved December 20, 2016 from http://blog.froont.com/9-basic-principles-of-responsive-web-design/
[5] Friedman V. (2008) 10 Principles Of Effective Web Design. retrieved December 20, 2016 from https://www.smashingmagazine.com/2008/01/10-principles-of-effective-web-design/