Yuningsih Wagafir, Yayu Isyana Pongoliu, & Herlina Rasjid. (2022). 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(2), 93–113. https://doi.org/10.55657/iefj.v1i2.40