Yuliani R, Sutisna D, Oktaviani D, Genia Fatihat G, Hasan Padmanegara O. Formation of Optimum Portfolio Using Single Index Model (Case Study of Stock LQ 45 Period 2016 - 2019). Psychosocial rehabilitation. 2020;24(2):3049-3055. doi:10.61841/0mmk4h21