Fitriyana, Nur, et al. “Effects of Using Media of Chemondro and Video Conference on Teaching Learning towards Students’ Self-Efficacy and Students’ Self-Regulated Learning on the Subject of Hydrocarbon”. EDUCATUM Journal of Science, Mathematics and Technology, vol. 5, no. 1, June 2018, pp. 1-8, https://doi.org/10.37134/ejsmt.vol5.1.1.2018.