Putri, W., and L. DJ. “Description of Critical Thinking Ability at XI IPA 1 Grade of SMAN 7 Padang in Solving Chemistry Problems on Reaction Rate Material”. Entalpi Pendidikan Kimia, Vol. 3, no. 2, June 2022, pp. 9-16, doi:10.24036/epk.v3i2.252.