@book{43890,
	author = {Mariscal Flores, Maria Luisa and Pindado Martínez, Maria luz},
	title = {Manejo actual de la vía aérea difícil},
	publisher = {Ergon,},
	year = {2007},
	address = {España :},
	url = {http://biblioteca.unac.edu.co/portadas/55403.jpg}
}