Catedral Medieval de Lugo - Espanha

https://catedraismedievais.blogspot.com/p/360.

http://portal.mec.gov.br/index.php?option=com_content&view=article&id=10263&catid=222&Itemid=823

http://portal.mec.gov.br/index.php?option=com_content&view=article&id=10263&catid=222&Itemid=823

http://portal.mec.gov.br/seb/arquivos/pdf/Consescol/ce_cad2.pdf

https://www.cnpm.embrapa.br/projetos/cdbrasil/

http://portaldoprofessor.mec.gov.br/storage/materiais/0000014213.pdf