Ismail Chandra, M., S. Suyanto, T. . Widyastuti, and N. . Ahmar. “Pertarungan Model Altman, Springate, Zmijewski Dan Grover Memprediksi Financial Distress Perusahaan Jasa”. Jurnal Indonesia Sosial Teknologi, vol. 2, no. 07, July 2021, pp. 1183-96, doi:10.59141/jist.v2i07.195.