Aprilia, Vina. “Difficulties of Class XI Science Students of Public Senior High School Palangka Raya City 2018/2019 Academic Year in Understanding Gas Laws”. Jurnal Ilmiah Kanderang Tingang 11, no. 2 (December 31, 2020): 255-263. Accessed May 2, 2024. https://chem-upr.education/ojs/index.php/JIKT/article/view/92.