SUDZINA, František. Attitude and Loyalty to Two Brands of Beer of the Same Producer. Scientific Annals of Economics and Business, Iasi, Romania, v. 64, n. SI, p. 57–69, 2017. DOI: 10.1515/saeb-2017-0035. Disponível em: https://saeb.feaa.uaic.ro/index.php/saeb/article/view/1073. Acesso em: 18 apr. 2025.