Yuliani, Reva, Deden Sutisna, Desy Oktaviani, Gita Genia Fatihat, and Oliver Hasan Padmanegara. 2020. “Formation of Optimum Portfolio Using Single Index Model (Case Study of Stock LQ 45 Period 2016 - 2019)”. International Journal of Psychosocial Rehabilitation 24 (2): 3049-55. https://doi.org/10.61841/0mmk4h21.