Kodri, Suwatno, and Amir Machmud. “ Training and Self Efficacy: Key to Improve Technological Pedagogical and Content Knowledge of Economics Teachers”. International Journal of Psychosocial Rehabilitation 24, no. 8 (October 31, 2020): 3745–3752. Accessed May 11, 2026. https://www.psychosocial.com/index.php/ijpr/article/view/10991.