Ramadhani, Ridho, et al. “Diversifikasi Portofolio Dan Risiko Sistematik Terhadap Kinerja Saham Sektor FMCG: Pendekatan Sharpe Ratio Dan Treynor Ratio”. Yudishtira Journal : Indonesian Journal of Finance and Strategy Inside, vol. 6, no. 2, Aug. 2026, pp. 388-05, doi:10.53363/yud.v6i2.206.