STAGES OF DEVELOPMENT OF THE MARKETING CONCEPT. Journal of Universal Science Research, [S. l.], v. 2, n. 9, p. 133–140, 2024. DOI: 10.66301/jusr.v2i9.7100. Disponível em: https://www.universalpublishings.com/index.php/jusr/article/view/7100. Acesso em: 12 nov. 2026.