Bahar, Nismawati, et al. “Optimalisasi Portofolio Saham Dengan Model Markowitz Pada Perusahaan Manufaktur Di Bursa Efek Indonesia Periode Agustus 2023-Juli 2024”. Journal of Mathematics, Statistics and Applications, vol. 1, no. 1, Nov. 2024, pp. 52-59, https://doi.org/10.61220/jmsa.v1i1.20241.512.