ZAHIDIN AINUR ROSYID, HANIF, and MADLAZIM. “DEVELOPMENT OF FLIPPED CLASSROOM LEARNING INSTRUMENT AS INNOVATIVE LEARNING WHICH INTEGRATED TO YOUTUBE VIDEO TO IMPROVE STUDENT LEARNING ACHIEVEMENT”. IPF: Inovasi Pendidikan Fisika, vol. 8, no. 1, Jan. 2019, https://ejournal.unesa.ac.id/index.php/inovasi-pendidikan-fisika/article/view/26632.