References

(A) K. D. Keele. (1955 May). Leonardo da Vinci on vision. Retrieved April 16, 2014,                   from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1918888/?page=2

      (B) Kawash, S. The First Milky Way Bar: Way Ugly. Retrieved April 17, 2014,                                                               from http://candyprofessor.com/2011/05/16/milky-way-in-the-1920s/
      (C) Bank of America. How to Establish an Emergency Fund. Retrieved April 17, 2014                                                   from https://www.bankofamerica.com/deposits/manage/emergency-savings-fund.go