Agustini, Mahdiana. “Meningkatkan Aktivitas Dan Hasil Belajar Siswa Menggunakan Model Flipped Classroom Melalui Aplikasi Google Classroom”. Indonesian Journal of Educational Development (IJED) 2, no. 2 (August 29, 2021): 280-289. Accessed May 4, 2024. https://ojs.mahadewa.ac.id/index.php/ijed/article/view/1239.