REN, Weijia; KRENZKE, Tom; WEST, Brady; CANTOR, David. An Evaluation of the quality of interviewer and virtual observations and their value for nonresponse bias reduction . Survey Research Methods, [S. l.], v. 16, n. 1, p. 97–131, 2022. DOI: 10.18148/srm/2022.v16i1.7767. Disponível em: https://ojs.ub.uni-konstanz.de/srm/article/view/7767. Acesso em: 25 feb. 2024.