Iskandar, Siahaan, M. D. L., Fachrid Wadly, & Raimon Efendi. (2023). Developing Project Based Learning Case Studie Model To Improving Learner Skill On Industry Revolution 4.0. International Journal Of Computer Sciences and Mathematics Engineering, 2(2), 100–108. https://doi.org/10.61306/ijecom.v2i2.27