Rosyadi, Abel Maaruf, and Fauzana Gazali. 2019. “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 1 (4), 975-81. https://jurnal.ranahresearch.com/index.php/R2J/article/view/159.