“ANALISIS KESALAHAN MAHASISWA PGSD DALAM MENYELESAIKAN SOAL PEMECAHAN MASALAH MATEMATIS BERDASARKAN GEORGE POLYA”. EduMa: Mathematics Education Learning and Teaching, vol. 7, no. 1, June 2018, pp. 19-40, https://doi.org/10.24235/eduma.v7i1.2711.