Abdullah, Dian, Zaenuri Mastur, and Hery Sutarto. 2015. “KEEFEKTIFAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING BERNUANSA ETNOMATEMATIKA TERHADAP KEMAMPUAN PEMECAHAN MASALAH SISWA KELAS VIII”. Unnes Journal of Mathematics Education 4 (3). https://doi.org/10.15294/ujme.v4i3.9056.