Erviana, Vera Yuli. “The Development of STEM Integrated Encyclopedia (Science, Technology, Engineering, Mathematics) As Enrichment for Students in Elementary Schools”. Jurnal Inovasi Pendidikan Dasar 5, no. 1 (November 30, 2019): 31–44. Accessed December 5, 2024. https://journal.uhamka.ac.id/index.php/jipd/article/view/8666.