Abdal, Ainun Mawaddah, et al. “Estimation of Optimal Portfolio Return and Risk on the LQ-45 Index for the 2020-2022 Period Using the Capital Asset Pricing Model (CAPM) ”. Jurnal Matematika, Statistika Dan Komputasi, vol. 19, no. 3, May 2023, pp. 506-19, doi:10.20956/j.v19i3.25005.