Pettijohn II, T. F., LaPiene, K. E., Pettijohn, T. F. and Horting, A. L. (2012) “Relationships between Facebook Intensity, Friendship Contingent Self-Esteem, and Personality in U.S. College Students”, Cyberpsychology: Journal of Psychosocial Research on Cyberspace, 6(1), p. Article 2. doi: 10.5817/CP2012-1-2.