FERG, Robyn A.; CONRAD, Frederick G.; GAGNON-BARTSCH, Johann A. A Critical Evaluation of Tracking Public Opinion with Social Media: A Case Study in Presidential Approval. methods, data, analyses, [S. l.], v. 15, n. 2, p. 215–240, 2021. DOI: 10.12758/mda.2021.04. Disponível em: https://majournals.bib.uni-mannheim.de/mda/article/view/2021.04. Acesso em: 18 mar. 2026.