The Effectiveness of Product and Brand Promotion: the Role of Marketing Communications. Economics and region, [S. l.], n. 1(80), p. 75–81, 2021. DOI: 10.26906/EiR.2021.1(80).2240. Disponível em: https://ojs35.nupp.edu.ua/eir/article/view/2240. Acesso em: 23 dec. 2025.