LANGSCHIED, Linda. The POLL Database: Roper Center’s Online Source for Public Opinion Research. IASSIST Quarterly, [S. l.], v. 11, n. 1, p. 11, 1987. DOI: 10.29173/iq265. Disponível em: https://iassistquarterly.com/index.php/iassist/article/view/265. Acesso em: 3 jul. 2024.