1. Smartphones and Health Promotion: A Review of the Evidence
2. NielsenMobile Millennials: Over 85% of Generation Y Owns Smartphones20142015-08-31New York, NYThe Nielsen Companyhttp://www.nielsen.com/us/en/insights/news/2014/mobile-millennials-over-85-percent-of-generation-y-owns-smartphones.html
3. StatisticaCumulative Number of Apps Downloaded From the Google Play Android App Store as of July 20132015-08-31http://www.statista.com/statistics/281106/number-of-android-app-downloads-from-google-play/
4. StatisticaCumulative Number of Apps Downloaded From the Apple App Store From July 2008 to June 20152015-08-31http://www.statista.com/statistics/263794/number-of-downloads-from-the-apple-app-store/
5. Finding a Depression App: A Review and Content Analysis of the Depression App Marketplace