GAO, Yan. Equipment Maintenance based in BOPPPS Mode Course Research and Exploration. Journal of Education and Educational Research, [S. l.], v. 3, n. 2, p. 59–61, 2023. DOI: 10.54097/jeer.v3i2.9018. Disponível em: https://drpress.org/ojs/index.php/jeer/article/view/9018. Acesso em: 16 apr. 2026.