RAMDAN, F. The Impact of Coal, Nickel, and Crude Oil Prices on the Composite Stock Price Index 2020-2023. Journal of Management Economic and Financial, [S. l.], v. 2, n. 5, p. 242–248, 2024. DOI: 10.59261/jmef.v2i5.57. Disponível em: http://jmef.polteksci.ac.id/index.php/jmef/article/view/57. Acesso em: 19 apr. 2026.