Astuti, P., and I. Ermiana. “PENGARUH MODEL EXAMPLE NON EXAMPLE TERHADAP HASIL BELAJAR IPA SISWA KELAS V SEKOLAH DASAR ”. Jurnal Ilmiah Widya Pustaka Pendidikan, Vol. 6, no. 1, June 2018, pp. 21 -27, https://jiwpp.unram.ac.id/index.php/widya/article/view/243.