Rosyadi, A. M., and F. Gazali. “EFEKTIVITAS MODUL SISTEM KOLOID BERORIENTASI CHEMO-ENTREPRENEURSHIP (CEP) TERHADAP HASIL BELAJAR SISWA KELAS XI DI SMA NEGERI 12 PADANG”. Ranah Research : Journal of Multidisciplinary Research and Development, Vol. 1, no. 4, Aug. 2019, pp. 975-81, https://jurnal.ranahresearch.com/index.php/R2J/article/view/159.