Riastini, P.N. and Mustika, I.K.A. 2017. PENGARUH MODEL POLYA TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA KELAS V SD. International Journal of Elementary Education. 1, 3 (Sep. 2017), 189–196. DOI:https://doi.org/10.23887/ijee.v1i3.11887.