WILLIE, Michael. The Thin Line Between Service Innovation and Brand Extension. Golden Ratio of Marketing and Applied Psychology of Business, [S. l.], v. 6, n. 2, p. 581–593, 2026. DOI: 10.52970/grmapb.v6i2.652. Disponível em: https://goldenratio.id/index.php/grmapb/article/view/652. Acesso em: 29 aug. 2026.