SAMOSIR, Beslon. Improving Student Learning Outcomes with the Application of Problem Based Learning Models in Microprocessor and Microcontroller Subjects at SMK Negeri 2 Pematangsiantar. International Journal of Multidisciplinary: Applied Business and Education Research, Malang, Indonesia, v. 3, n. 7, p. 1284–1294, 2022. DOI: 10.11594/ijmaber.03.07.08. Disponível em: https://ijmaberjournal.org/index.php/ijmaber/article/view/451. Acesso em: 13 feb. 2026.