Autor: http://instituto.frances.zaragoza.diwiki.org/index.php/Daniel_Pennac

http://www.elpais.com/articulo/semana/torpe/Pennac/elpepuculbab/20080906elpbabese_3/Tes

http://www.abc.es/20080924/cultura-libros/daniel-pennac-recrea-dias-20080924.html

http://sindicat.info/article.php?sid=20081020092102