@Book{RANFE2009001525, title = "\textquestiondown Por qu\'{e} somos pobres?", author = "Gallardo y G\'{o}mez, Manuela", publisher = "Pamplona : G\'{o}mez", editor = "G\'{o}mez", URL = "http://bibliotecavirtual.ranf.com/i18n/consulta/registro.do?id=1525", year = "1954", }