Viani, H. O., and A. Kamaludin. “Pengembangan Modul Kimia Bermuatan Higher Order Thinking Skills (HOTS) Pada Materi Makromolekul”. Journal of Tropical Chemistry Research and Education, vol. 2, no. 2, Oct. 2020, pp. 50-58, doi:10.14421/jtcre.2020.22-01.