Theorical backgroung of demographic variables in marketing research. Elegest Elegeş, [S. l.], v. 1, n. 1, p. 66–80, 2025. DOI: 10.64360/mzkmvc56. Disponível em: https://elegest.com/index.php/1/article/view/45. Acesso em: 4 nov. 2025.