Ferraz de Toledo, R. , Focesi Pelicioni, M.C. , Giatti, L.L., Pranzetti Barreira, L., Audrá Cutolo, S. , Viero Mutti, L. , Almeida Rocha, A. and Rios, L. 2006. Native brazilian population in Amazon region: a methodology for research-action in environmental education: DOI: 10.15343/0104-7809.200630.4.5. O Mundo da Saúde. 30, 4 (Oct. 2006), 559–569.