ANTUNIASSI, Maria Helena Rocha. Action-research, participant observation and rural extension. Cadernos CERU, São Paulo, Brasil, v. 32, n. 1, p. 264–274, 2021. DOI: 10.11606/issn.2595-2536.v32i1p264-274. Disponível em: https://www.journals.usp.br/ceru/article/view/189286.. Acesso em: 20 may. 2024.