Firmantia Putri, Debby, and Yerimadesi. 2019. “PENGEMBANGAN PENUNTUN PRATIKUM KIMIA BERBASIS GREEN CHEMISTRY UNTUK KELAS XI SMA/MA”. Ranah Research : Journal of Multidisciplinary Research and Development 2 (1), 244-53. https://jurnal.ranahresearch.com/index.php/R2J/article/view/216.