Buluama, A., 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 Journal, Vol. 6, no. 1, Apr. 2021, pp. 1 - 20, doi:10.33541/fjm.v6i1.2829.