An Analysis and Research on Cost and Expense Control in the Transportation Industry: A Case Study of China Southern Airlines. Journal of Agricultural Science and Supply Chain Management, [S. l.], v. 2, n. 1, p. 28–43, 2026. DOI: 10.71204/4dm4mx59. Disponível em: https://jasscm.cscholar.com/article/view/1000280. Acesso em: 3 may. 2026.