Edelson, Paul. “Challenging, Interesting and Important - Adult Education As Theory, Practice and Research: The Captive Triangle. Robin Usher and Ian Bryant. 1989. New York: Routledge. ”. Canadian Journal for the Study of Adult Education, vol. 6, no. 2, Nov. 1992, pp. 67-69, https://cjsae.library.dal.ca/cjsae/article/view/3017.