Suharti, Titing, Diah Yudhawati, Anuraga Kusumah, and Berliani Fatimah. “Portfolio Performance Analysis Using the Treynor Model in the Early Period of the Covid-19 Pandemic”. inovator 13, no. 1 (March 30, 2024): 128–136. Accessed May 4, 2025. https://ejournal.uika-bogor.ac.id/index.php/INOVATOR/article/view/17663.