Walker, Sarah. “The Nature of Transformation: Environmental, Adult and Popular Education. Darlene E. Clover, Shirley Follen, and Budd Hall (1998). Toronto: Transformative Learning Centre. ”. Canadian Journal for the Study of Adult Education, vol. 13, no. 1, May 1999, pp. 85-87, https://cjsae.library.dal.ca/cjsae/article/view/1991.