@book{30527,
	author = {EMAKUNDE},
	title = {EL LENGUAJE, INSTRUMENTO DE PROGRESO},
	publisher = {EUSKO JAURLARITZA},
	year = {1992},
	address = {VITORIA-GASTEIZ},
	url = {http://www.siis.net/documentos/Digitalizados/900300_El lenguaje instrumento de progreso.pdf}
}