Duggan, J. M., N. L. Heath, J. R. Toste, and S. Ross. “School Counsellors’ Understanding of Non-Suicidal Self-Injury: Experiences and International Variability”. Canadian Journal of Counselling and Psychotherapy, vol. 45, no. 4, Sept. 2011, https://cjc-rcc.ucalgary.ca/article/view/59271.