Oktaviani, Ari, K Anom, and Betty Lesmini. 2020. “Pengembangan Modul Kimia Terintegrasi STEM (Science, Technology, Engineering and Mathematics) Dan PBL (Problem-Based Learning)”. JEC 2 (2):64-72. https://doi.org/10.21580/jec.2020.2.2.6279.