DEWI, Made Pratiwi. OPTIMASI PORTOFOLIO PADA SAHAM PEFINDO 25 DENGAN MENGGUNAKAN MODEL MARKOWITZ (STUDI KASUS DI BURSA EFEK INDONESIA). Warmadewa Management and Business Journal (WMBJ), [S. l.], v. 3, n. 1, p. 32–41, 2021. DOI: 10.22225/wmbj.3.1.2021.32-41. Disponível em: https://ejournal.warmadewa.ac.id/index.php/wmbj/article/view/2948. Acesso em: 31 aug. 2026.