@book{153643,
	author = {United States of América. General Accounting Office},
	title = {Energy task force},
	publisher = {United States of América. General Accounting Office},
	year = {2003},
	address = {United States of America},
	note = {Página web visitada en enero de 2004. ; Navegadores de Internet ; Adobe Acrobat (PDF)},
	url = {http://www.gao.gov/new.items/d03894.pdf}
}