Indriani Mentaruk, Andi Nurul Azizah, Ummu Kalsum. Analisis Pembentukan Portofolio Optimal Pada Saham Perusahaan Rumah Sakit di Indonesia. JURDIP [Internet]. 2025Dec.10 [cited 2026Jun.15];6(4):1947-63. Available from: https://jurnal.stokbinaguna.ac.id/index.php/JURDIP/article/view/5301