Darmaji, D., Kurniawan, D. A., Astalini, A., Lumbantoruan, A., & Samosir, S. C. (2019). Mobile Learning in Higher Education for The Industrial Revolution 4.0: Perception and Response of Physics Practicum. International Journal of Interactive Mobile Technologies (iJIM), 13(09), pp. 4–20. https://doi.org/10.3991/ijim.v13i09.10948