Rizal Syafiie, M., Setiabudi, A. and Huliawati, R. 2023. Firm Value Study Of Idx Bumn20 Companies In Indonesia. International Journal of Educational Research & Social Sciences . 4, 3 (Jun. 2023), 489–492. DOI:https://doi.org/10.51601/ijersc.v4i3.657.