A. . . Buluama, Roy Sembel, and J. . Sidharta, “PERFORMANCE EVALUATION AND FORMATION OF OPTIMAL PORTOFOLIO USING CAPM METHOD AND SINGLE INDEX MODEL IN PROPERTY AND REAL ESTATE SUB-SECTOR COMPANIES REGISTERED IN INDONESIA STOCK EXCHANGE 2015-2019”, Fundamental; Management;, vol. 6, no. 1p, pp. 1–20, Apr. 2021.