1. Gartner says worldwide media tablet sales to reach 119 million units in 2012. Available at: http://www.gartner.com/it/page.jsp?id=1980115. Accessed April 10, 2012.
2. App Store. Apple, Cupertino, CA. Available at: http://itunes.apple.com/genre/mobile-software-applications/id36?mt=8. Accessed October 5, 2012.
3. Google Play. Google, Mountain View, CA. Available at: http://play.google.com/store. Accessed October 5, 2012.
4. Cook T. Apple iPhone 5 Keynote. San Francisco, CA. Available at: http://www.apple.com/apple-events/september-2012/. Accessed October 1, 2012.
5. Lowe S. Google Play celebrates 25 billion downloads with 25 cent apps, discounted books, and movies. The Verge. Available at: http://www.theverge.com/2012/9/26/3409446/google-play-25-billion-downloads-sale. Accessed October 2, 2012.