SCHMIDT-CATRAN, Alexander W.; HÖRSTERMANN, Katharina. Social Presence in Online Surveys. methods, data, analyses, [S. l.], v. 7, n. 3, p. 397–432, 2013. DOI: 10.12758/mda.2013.019. Disponível em: https://majournals.bib.uni-mannheim.de/mda/article/view/2013.019. Acesso em: 18 mar. 2026.