Iskandar, Muhammad Donni Lesmana Siahaan, Fachrid Wadly, and 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.