Farda, Ummu Jauharin Farda, Achmad Binadja, and Eko Purwanti. “VALIDITAS PENGEMBANGAN BAHAN AJAR IPA BERVISI SETS”. Journal of Primary Education 5, no. 1 (February 23, 2017): 36-41. Accessed November 24, 2024. https://journal.unnes.ac.id/sju/jpe/article/view/12890.