Autora de: Español en marcha... 2007: (Copyright: Francisca Castro)

LC authorities 13/01/09

http://catalogo.bne.es/ 13/01/09

http://catalogue.bnf.fr/ 13/01/09

EDA 13/01/09
CNPq 13/01/09
http://catalogue.bl.uk/ 13/01/09