Rachmat, Nur, Mohammad Fanani, Darsono Darsono, and Suwarto Suwarto. 2020. “The Effect of Self-Efficacy and Optimism Toward Quality of Life on Transfemoral Prosthesis Users in Indonesia”. Advances in Social Sciences Research Journal 7 (1):153-57. https://doi.org/10.14738/assrj.71.7638.