rizqiana, fika atina et al. 2019. Analisis Textbooks-for-High-School-Student- Studying-the Sciences-Chemistry materi Pokok Hidrokarbon dalam Perspektif Kurikulum 2013. JEC. 1, 1 (Jul. 2019), 22–27. DOI:https://doi.org/10.21580/jec.2019.1.1.3940.