Mudzakir, M., and T. . Setiawan. “The Effect of Fundamental Ratios on Stock Returns In The Coal Mining Sector on The Idx (2018-2023)”. Journal Research of Social Science, Economics, and Management, vol. 4, no. 2, Aug. 2024, pp. 155-64, doi:10.59141/jrssem.v4i2.716.