References
- Facebook. (2014). Facebook Newsroom. Retrieved 30 April 2014 from http://newsroom.fb.com/company-info/ (Facebook, December 31, 2014; accessed today 3/23/15)
- Twitter. (2014). About Twitter. Retrieved 30 April 2014 from https://about.twitter.com/company (Twitter, 2015, accessed today 3/23/15)