Safitri, Nonik Mega, Shahnaz Aflaha Vanya Adisty, and Tisar Dewi Pratiwi. “Portofolio Saham-Saham Syariah Menggunakan Metode Markowitz”. Jurnal Sains 1, no. 1 (October 20, 2022): 56–62. Accessed October 24, 2026. https://ejournal.itsnulampung.ac.id/index.php/journalsains/article/view/41.