REFI TRI ANIKA; NABILA FEBRIYANA; SITI MAISYAROH; MARIA YOVITA R PANDIN. Analysis of the Effect of Stock Portfolio Diversification with the Markowitz Method Approach to Portfolio Risk and Return on Idxbumn20 Index Stocks. International Journal of Economics and Management Research, [S. l.], v. 3, n. 1, p. 26–40, 2024. DOI: 10.55606/ijemr.v3i1.154. Disponível em: https://ijemr.asia/index.php/ijemr/article/view/154. Acesso em: 19 apr. 2025.