KEWAL, Suramaya Suci. PEMBENTUKAN PORTOFOLIO OPTIMAL SAHAM-SAHAM PADA PERIODE BULLISH DI BURSA EFEK INDONESIA. Jurnal Economia, [S. l.], v. 9, n. 1, p. 81–91, 2013. DOI: 10.21831/economia.v9i1.1378. Disponível em: https://journal.uny.ac.id/index.php/economia/article/view/1378. Acesso em: 12 may. 2025.