Yuningsih Wagafir, Yayu Isyana Pongoliu, and Herlina Rasjid. “Analisis Penerapan Metode Single Index Model Dan Constant Correlation Model Dalam Optimalisasi Portofolio Saham Indeks LQ-45 Di Bursa Efek Indonesia (BEI) Periode 2019-2021”. Islamic Economics and Finance Journal 1, no. 2 (May 30, 2022): 93–113. Accessed December 23, 2024. https://journal.scimadly.com/index.php/iefj/article/view/40.