1. Acosta, D. (2012). WebGL Demo – The X Toolkit for Scientific Visualization. Retrieved March 10, 2014, from http://www.webgl.com/2012/03/webgl-demo-the-x-toolkit-for-scientific-visualization/
2. Animals in Medieval Art. (2011). Heilbrun Timeline of Art History. Department of Medieval Art and The Cloisters, The Metropolitan Museum of Art. Retrieved March 14, 2014, from http://www.metmuseum.org/toah/hd/best/hd_best.htm
3. Arnheim, R. (1969). Visual Thinking. Berkeley, CA: University of California Press. (Also: London: Faber and Faber, 1969).
4. Arnheim, R. (1990). Language and the Early Cinema. Leonardo, Digital Image Digital Cinema.