Pedroso, Ludmila Giuli, et al. “The Structures Sugarcane and Citrus Fruit in Alagoas, Pernambuco and São Paulo”. Revista de Política Agrícola, vol. 24, no. 3, Dec. 2015, pp. 88-101, https://rpa.sede.embrapa.br/RPA/article/view/1039.