Pritasari Wybawa, Erika, and M. Roby Yuliansyah. 2026. “The Impact of Company Size, Beta, and ESG Ratings on the Efficiency of Palm Oil Companies Listed on the IDX During Crisis Periods”. Jurnal Penelitian Kelapa Sawit 34 (1), 57-70. https://doi.org/10.22302/iopri.jur.jpks.v34i1.305.