Maulida, D. W. ., M. H. . Mahmudah, M. Hidayati, and Y. M. Hidayati. “Analysis of Procedural Errors in Arithmetic Problem Solving Through Polya Steps”. Mathline : Jurnal Matematika Dan Pendidikan Matematika, vol. 10, no. 1, Feb. 2025, pp. 271-85, doi:10.31943/mathline.v10i1.846.