HARAHAP, F. A.; HUTASUHUT, S. .; THAMRIN, T. Development of Flip Book-Based Economics Teaching Materials To Improve The Economic Learning Outcomes of Students In Class Xi Man 2 Deli Serdang In Academic Year 2021/2022. Journal Research of Social Science, Economics, and Management, [S. l.], v. 2, n. 6, p. 938–956, 2023. DOI: 10.59141/jrssem.v2i06.356. Disponível em: https://jrssem.publikasiindonesia.id/index.php/jrssem/article/view/356. Acesso em: 19 nov. 2024.