Bruce, Catherine D., and Tara Flynn. “Assessing the Effects of Collaborative Professional Learning: Efficacy Shifts in a Three-Year Mathematics Study”. Alberta Journal of Educational Research 58, no. 4 (June 12, 2013): 691–709. Accessed May 2, 2024. https://journalhosting.ucalgary.ca/index.php/ajer/article/view/55661.