KUSUMAH, Salma Febi Niti; MEGAWATI, Liya. Analisis Markowitz dan Model Indeks Tunggal dalam Pembentukan Portofolio Optimal Saham Jakarta Islamic Index Periode 2019-2023. EKOMA : Jurnal Ekonomi, Manajemen, Akuntansi, [S. l.], v. 3, n. 6, p. 1673–1688, 2024. DOI: 10.56799/ekoma.v3i6.4694. Disponível em: https://al-haramjournal.co.id/EKOMA/article/view/4694. Acesso em: 13 aug. 2026.