1. Barash, V., & Golder, S. (2010). Twitter: Conversation, entertainment, and information, all in one network! Ch 10. In D. Hansen, B. Shneiderman, & M. A. Smith (Eds.), Analyzing social media networks with NodeXL: Insights from a connected world. MA: Morgan Kaufmann.
2. Cha, M., Haddadi, H., Benevenuto, F., & Gummadi, K. P. (2010). Measuring user influence in Twitter: The million follower fallacy. Paper presented in the fourth international AAAI conference on weblogs and social media.
3. Cho, S. E., Park, J. Y., & Park, H. W. (2011, forthcoming). Public relations of government organizations in the era of web2.0. In H. W. Park (Ed.). An introduction to Social Media. KyeongSan: WCU Webometrics Institute. Written in Korean.
4. Fang, Z. (2002). E-government in digital era: Concept, practice, and development. International Journal of the Computer, the Internet and Management, 10, 1–22.
5. Garrett, R. K. (2011). Troubling consequences of online political rumoring. Human Communication Research, 37, 255–274.