1. David Copperfield (illusionist), 2015. Wikipedia, the free encyclopedia. Retrieved March 10, 2015, from https://en.wikipedia.org/wiki/Main_Page
2. But does it work? Evaluating the Brandeis Reference Model;Herman;Ref. Serv. Rev.,1994
3. Kehoe, M., 2009. Search best practices: only one search box. New Idea Engineering. Retrieved from http://www.ideaeng.com/one-search-best-practice-0603
4. Office Online, 2015. Wikipedia, the free encyclopedia. Retrieved March 10, 2015, from https://en.wikipedia.org/wiki/Main_Page
5. Platform as a service, 2015. Wikipedia, the free encyclopedia. Retrieved March 10, 2015, from https://en.wikipedia.org/wiki/Main_Page