Helsy, I., & Andriyani, L. (2017). PENGEMBANGAN BAHAN AJAR PADA MATERI KESETIMBANGAN KIMIA BERORIENTASI MULTIPEL REPRESENTASI KIMIA. JTK (Jurnal Tadris Kimiya), 2(1), 104–108. https://doi.org/10.15575/jta.v2i1.1365