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) 3, no. 1 (February 28, 2021): 32-41. Accessed July 4, 2024. https://www.ejournal.warmadewa.ac.id/index.php/wmbj/article/view/2948.