Hamid, H., Jalinus, N., Inra, A., Ambiyar, A., Waskito, W., Sukardi, S., & Herlin, N. (2019). Development of Fourth Industry Oriented Mechanical Engineering Mechatronics Learning Devices 4.0. Journal of Education Research and Evaluation, 3(4), 266–275. https://doi.org/10.23887/jere.v3i4.23204