MARCUS, Jan. The Effect of Survey Methods on the Postmaterialism Index. methods, data, analyses, [S. l.], v. 3, n. 2, p. 137–166, 2009. DOI: 10.12758/mda.2009.010. Disponível em: https://majournals.bib.uni-mannheim.de/mda/article/view/2009.010. Acesso em: 8 oct. 2025.