Siman (2023) “The Relationship between Interest in Learning and Mastery of PDTM Theory with Learning Outcomes of PDTM Class X Subjects of the Machining Engineering Expertise Program of SMK Negeri 1 Percut Seituan”, International Journal of Economic, Technology and Social Sciences (Injects), 3(1), pp. 276–283. doi: 10.53695/injects.v3i1.808.