GENG, Xinyue. Analysis of the Relationship between Sales and Promotions in the Automotive Industry based on the Porter’s Five Forces Model. Finance & Economics, [S. l.], v. 3, n. 5, p. 6832, 2025. DOI: 10.61173/pgrtw837. Disponível em: https://fe.deanfrancis.press/article/view/391. Acesso em: 4 nov. 2026.