Thacker, C., and M. Novak. “Student Role Supports for Younger and Older Middle- Aged Women: Application of a Life Event Model”. Canadian Journal of Higher Education, vol. 21, no. 1, Apr. 1991, pp. 13-36, https://www.cjhe.test.sfulib7.publicknowledgeproject.org/index.php/cjhe/article/view/183092.