Trainor, K., L. Pilloud, A. R. Mahrer, A. Stalikas, and M. Boissoneault. “A Scale for Assessing Degree of Strength of Client Feeling”. Canadian Journal of Counselling and Psychotherapy, vol. 24, no. 2, May 2011, https://cjc-rcc.ucalgary.ca/article/view/59501.