UTAMI, G.; SAPUTRO, B. A.; ASRI UNTARI, M. F. Analysis of Errors in Resolving FPB and KPK Story Questions Based on Polya Procedures for Class IV Elementary School Students. Jurnal Ilmiah Sekolah Dasar, [S. l.], v. 4, n. 4, p. 642–654, 2021. DOI: 10.23887/jisd.v4i4.27464. Disponível em: https://ejournal.undiksha.ac.id/index.php/JISD/article/view/27464. Acesso em: 2 may. 2024.