http://www.ebooksbrasil.com/eLibris/critica.html

http://www.google.com.br/search?q=a+critica+da+razao+pura&ie=UTF-8&oe=UTF-8&hl=pt&lr=

http://www.litteris.com.br/PDF/critica_da_razao_pura.pdf

http://www.rolltheboneshp.hpg.ig.com.br/textos/razaopura.htm

http://www.terravista.pt/FerNoronha/4552/Down/Arezende01.doc