1. Apollo Japan. (2005). ScreenCode. Retrieved September 5, 2015, from http://www.apollo-japan.ne.jp/sccd_en.html
2. Audacity. (2015). Audacity is free, open source, cross-platform software for recording and editing sounds. Retrieved September 5, 2015, form http://audacityteam.org
3. FUSE Network, Inc. (2010). FUSEe. Retrieved September 5, 2015, from http://fusee.jp/news/index.php?pageID=21
4. Gridmark Inc. (2009). GridOnput. Retrieved September 5, 2015, from http://www.gridmark.co.jp/english/gridonput
5. HP Next. (2015). Post tagged Augmented Reality. Retrieved September 5, 2015, from http://www8.hp.com/hpnext/tags/augmented-reality#.Vc_R6LS06-Q,2015