N. Handayani, A. Wijayanti, and I. Listyarini, “Keefektifan Model Kooperatif Tipe Numbered Heads Together Berbantu Media Roda Pintar terhadap Hasil Belajar IPA Siswa”, j. ilm. sekol. dasar, vol. 2, no. 4, pp. 404–411, Nov. 2018.