BRONSTEIN, L. R.; MASON, S. E. A serial focus group model for understanding experiences of older adult volunteers and non-profit agency managers. Groupwork, [S. l.], v. 23, n. 2, p. 67-87, 2013. DOI: 10.1921/gpwk.v23i2.761. Disponível em: https://journals.whitingbirch.net/index.php/GPWK/article/view/761. Acesso em: 28 apr. 2024.