Lestari, Dian Indah, et al. “The Effect of the Flipped Classroom Approach and Self-Efficacy on a Guided Inquiry on students’ Creative Thinking Skills”. Jurnal Pendidikan Kimia, vol. 12, no. 2, Aug. 2020, pp. 95-105, doi:10.24114/jpkim.v12i2.19435.