Paramida, N., Mukti, C. F. C., Maharani, D. A., & Pandin, M. Y. R. (2023). Influence of Markowitz Method Risk and Return Calculations as a Basis for Investment Decisions in BEI BUMN Shares 20 Period 2019-2022. Journal of Business Management and Economic Development, 2(01), 272–286. https://doi.org/10.59653/jbmed.v2i01.441