Andi Dwi Wulandari, Muh. Ichwan Musa, Nurman, Anwar Ramli, and Hety Budiyanti. 2023. “Analysis of Investment Risk and Share Return in Coal Mining Companies Listed on IDX for The Period 2019-2021”. Economics and Business Journal (ECBIS) 1 (4):247-56. https://doi.org/10.47353/ecbis.v1i4.34.