Pratiwi DI, Ubaedillah U, Puspitasari A, Arifianto T. Flipped Classroom in Online Speaking Class at Indonesian University Context. International Journal of Instruction [Internet]. 2022 Apr. 1 [cited 2024 Nov. 22];15(2):697-714. Available from: https://e-iji.net/ats/index.php/pub/article/view/407