The Unique Social Assistance System and social work with families in PAIF: analysis of the 13 years of implementation nationwide and in the city of Teresina-PI. Emancipação, Ponta Grossa - PR, Brasil., v. 21, p. 1–19, 2021. DOI: 10.5212/Emancipacao.v.21.2117054.022. Disponível em: https://revistas.uepg.br/index.php/emancipacao/article/view/17054. Acesso em: 30 may. 2026.