Erniwati, E., H. Hunaidah, R. Nurhidayat, and S. Fayanto. “The Testing of E-Module Flip-PDF Corporate to Support Learning: Study of Interests and Learning Outcomes”. Journal of Education Technology, vol. 6, no. 4, Dec. 2022, pp. 586-97, doi:10.23887/jet.v6i4.43857.