SCHNELL, Rainer; NOACK, Marcel. The Accuracy of Pre-Election Polling of German General Elections. methods, data, analyses, [S. l.], v. 8, n. 1, p. 5–24, 2014. DOI: 10.12758/mda.2014.001. Disponível em: https://majournals.bib.uni-mannheim.de/mda/article/view/2014.001. Acesso em: 8 oct. 2025.