Suprapti, S. et al. 2021. Flipped Learning Instruction to Enhance University Students’ Higher Order Thinking Skills. Jurnal Kependidikan: Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran dan Pembelajaran. 7, 2 (Jun. 2021), 261–269. DOI:https://doi.org/10.33394/jk.v7i2.3320.