@book{19725,
	author = {Roberts, Hewitt and Robinson, Gary, autor.},
	title = {ISO 14001 EMS: manual de sistema de gestión medioambiemtal. /},
	publisher = {Paraninfo,},
	year = {1999},
	address = {Madrid, España :},
	edition = {Primera edición},
	note = {Incluye índice.}
}