Wishnoebroto, Wishnoebroto. “Flipping The Classroom: How Reversing Teaching-Learning Process Can Improve Learner’s Comprehension in Learning Foreign Language”. Humaniora 5, no. 2 (October 30, 2014): 1114-1121. Accessed March 14, 2025. https://journal.binus.ac.id/index.php/Humaniora/article/view/3228.