Valent, J.Z., Tisott, S.T., Schmidt, V. and Valent, V.D. 2014. Organic products quality: vegetable growers perception at an Ecological Fair in Porto Alegre – RS. Revista Eletrônica em Gestão, Educação e Tecnologia Ambiental. 18, 3 (Sep. 2014), 1072–1082. DOI:https://doi.org/10.5902/2236117013839.