“Analisis Kinerja dan Risiko Portofolio Optimal Saham LQ-45 Menggunakan Single Index Model dan Capital Asset Pricing Model Periode 2018-2021”, JIE, vol. 5, no. 2, hlm. 1–10, Des 2022, Diakses: 3 April 2026. [Daring]. Tersedia pada: https://ojs.unpatompo.ac.id/index.php/jie/article/view/58