价值链视角下B公司成本管理优化研究. 人文学刊, [S. l.], v. 1, n. 4, p. 1–6, 2026. DOI: 10.71411/rwxk.2026.v1i3.1349. Disponível em: https://ojs.shiharr.cn/index.php/rwxk/article/view/1349. Acesso em: 31 may. 2026.