1. Classroom community, pedagogical effectiveness, and learning outcomes associated with Twitter use in undergraduate marketing courses.;T. B.Clarke;Journal for Advancement of Marketing Education,2012
2. The birth of a social networking phenomenon
3. Costello, K. L., & Priem, J. (2011). Archiving scholars’ tweets. In Proceedings of the Fourth Annual Society of American Archivists Research Forum. Chicago, IL: Society of American Archivists. Retrieved April 25, 2013, from http://www2. archivists.org/sites/all/files/KCFinal.pdf
4. Dugan, L. (2012, February 21). Twitter to surpass 500 million registered users on Wednesday. Retrieved April 25, 2013, from http://www.mediabistro.com/alltwitter/500-million-registered-users_b18842
5. Tweeting the night away: Using Twitter to enhance social presence.;J. C.Dunlap;Journal of Information Systems Education,2009