1. American Sociological Association. (1991). Liberal learning and the sociology major. Washington, DC: American Sociological Association.
2. Astin, A. W. (1984). Student involvement: A developmental theory for higher education. Journal of College Student Personnel, 25, 297–307.
3. Astin, A. (1996). Involvement in learning revisited: Lessons we have learned. Journal of College Student Development, 37, 123–134.
4. Brooks, J. M. (1997). Beyond teaching and learning paradigms: Trekking into the virtual university. Teaching Sociology, 27, 1–14.
5. Clifton, A. K. (1976). Doin’ soc: An evaluation of actively involving introductory students in the work of sociology. Teaching Sociology, 3, 138–147.