Nurhakim, Eko Sanjaya, Abdul Mukti Soma, and Irni Yunita. 2024. “Constructing Optimal Portfolios Using the Single Index Model and Markowitz Model: A Study on Cryptocurrencies”. JASF: Journal of Accounting and Strategic Finance 7 (2):200-218. https://doi.org/10.33005/jasf.v7i2.485.