Melina, M., and A. G. . Kalinggo. “The Effect Of Altman, Grover And Zmijewski Models In Predicting The Financial Distress Of Coal Companies Listed On The Indonesia Stock Exchange”. IJOSPOL - International Journal of Social, Policy and Law , vol. 4, no. 1, Feb. 2023, pp. 69-79, doi:10.8888/ijospl.v4i1.114.