Widiana, I.W. and Sucidamayanti, N.P.W. 2017. PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE NUMBERED HEADS TOGETHER UNTUK MENINGKATKAN HASIL BELAJAR IPS. International Journal of Elementary Education. 1, 1 (Jul. 2017), 52–61. DOI:https://doi.org/10.23887/ijee.v1i1.11439.