Anwar, S. et al. 2023. Feasibility Analysis of Thermochemistry Senior High School Chemistry Textbook Based on Criteria of Four Steps Teaching Material Development Method . Jurnal Penelitian Pendidikan IPA. 9, 3 (Mar. 2023), 1394–1401. DOI:https://doi.org/10.29303/jppipa.v9i3.2770.