Wijayanto, Eko. “Tinjauan Segi Afektif Siswa Smp Dalam Mata Pelajaran Ipa”. Indonesian Journal of Education Research (IJoER) 1, no. 1 (February 27, 2020): 18-22. Accessed May 18, 2024. https://cahaya-ic.com/index.php/IJoER/article/view/56.