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^"Divisão Territorial do Brasil" (in Portuguese). Divisão Territorial do Brasil e Limites Territoriais, Instituto Brasileiro de Geografia e Estatística (IBGE). July 1, 2008. Retrieved December 17, 2009.
^Mainka, Peter Johann (2008), Roland und Rolândia im Nordosten von Paranà: Gründungs- und Frühgeschichte einer deutschen Kolonie in Brasilien(1932- 1944/45), Cultura Acadêmica, ISBN978-8598605272
