1.
Indayani WR, Arifani Y, Ma’rifah U. The Use of Flipped Classroom to Improve Students Writing Skill Using WhatsApp Group. JETLAL [Internet]. 2022 Mar. 8 [cited 2025 Jun. 6];6(1):19-24. Available from: https://journal.umg.ac.id/index.php/jetlal/article/view/3827