XU, R. A Retrospective Study of Product Quality. Journal of Management Science & Engineering Research, [S. l.], v. 2, n. 2, p. 1–3, 2020. DOI: 10.30564/jmser.v2i2.1846. Disponível em: https://journals.bilpubgroup.com/index.php/jmser/article/view/1846. Acesso em: 7 may. 2024.