ANDI DWI WULANDARI; MUH. ICHWAN MUSA; NURMAN; ANWAR RAMLI; HETY BUDIYANTI. Analysis of Investment Risk and Share Return in Coal Mining Companies Listed on IDX for The Period 2019-2021. Economics and Business Journal (ECBIS), [S. l.], v. 1, n. 4, p. 247–256, 2023. DOI: 10.47353/ecbis.v1i4.34. Disponível em: https://ecbis.net/index.php/go/article/view/34. Acesso em: 19 jan. 2026.