THOMAS, Michael. Measuring Performance in Marketing. Ekonomika, [S. l.], v. 69, p. 152–158, 2005. DOI: 10.15388/Ekon.2005.17414. Disponível em: https://www.zurnalai.vu.lt/ekonomika/article/view/17414. Acesso em: 24 may. 2025.