Sampurna, Abdul Malik, Mulawi Mulawi, and I Made Sadiana. 2020. “Profile of Mastery Chemical Bonding Concepts in Class X Students of Public Senior High School 4 Palangka Raya in Academic Year 2017/2018”. Jurnal Ilmiah Kanderang Tingang 11 (1), 14-29. https://doi.org/10.37304/jikt.v11i1.69.