@book{8131,
	author = {Guasch Arévalo, Emilia and Fernández López de Hierro, Carmen,  autora.},
	title = {Controversias en analgo-anestesia obstétrica / },
	publisher = {Ergon, D.L.},
	year = {2013},
	address = {Majadahonda, Madrid :},
	edition = {Primera edición}
}