http://www.planalto.gov.br/ccivil_03/constituicao/constituicao.htm

http://www.planalto.gov.br/ccivil_03/leis/l7853.htm

http://www.planalto.gov.br/ccivil_03/leis/l8112cons.htm

http://www.planalto.gov.br/ccivil_03/_ato2004-2006/2005/lei/l11091.htm

http://www.planalto.gov.br/ccivil_03/_Ato2011-2014/2014/Lei/L12990.htm

http://www.planalto.gov.br/ccivil_03/_ato2007-2010/2007/decreto/d6029.htm

http://www.planalto.gov.br/ccivil_03/decreto/d3298.htm

http://www.planalto.gov.br/ccivil_03/_ato2004-2006/2004/decreto/d5296.htm

http://www.planalto.gov.br/ccivil_03/_ato2007-2010/2007/decreto/d6029.htm

http://www.planalto.gov.br/ccivil_03/_ato2007-2010/2008/decreto/d6593.htm

http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2009/Decreto/D6944.htm