1. Ainsworth, M. D. (1989). Attachments beyond infancy. The American Psychologist, 44(4), 709–716.
2. Altbach, P. G., Reisberg, L., & Rumbley, L. E. (2009). Trends in global higher education: Tracking an academic revolution. Paris: United Nations Educational, Scientific and Cultural Organisation.
3. Anderman, L. H., & Freeman, T. M. (2004). Students’ sense of belonging in school. In P. R. Pintrich & M. I. Maehr (Eds.), Motivating students, improving schools: Advances in motivation and achievement (pp. 22–63). Amsterdam: Elsivier.
4. Baumeister, R. F., & Leary, M. R. (1995). The need to belong: Desire for interpersonal attachments as a fundamental human motivation. Psychological Bulletin, 117, 497–529.
5. Brown, S. K., & Burdsal, C. A. (2012). An exploration of sense of community and student success using the national survey of student engagement. The Journal of General Education, 61(4), 433–460.