@book{92854,
	author = {STATISTICAL INFORMATION SERVICE},
	title = {PERSONAL SOCIAL SERVICES STATISTICS 1997-98. ACTUALS},
	publisher = {CHARTERED INSTITUTE OF PUBLIC FINANCE AND ACCOUNTANCY},
	year = {1999},
	address = {Londres},
	url = {http://www.siis.net/documentos/Digitalizados/94894_Personal social services statistics 97-98 Actuals.pdf}
}