@book{238987,
	author = {Wagner, Richard, and Mayo Antoñanzas, Angel-Fernando,},
	title = {Ópera y drama /},
	publisher = {Ediciones Akal, S.A.,},
	year = {[2013]},
	series = {Akal/Música ;},
	address = {Tres Cantos, Madrid, España :},
	url = {https://www.digitaliapublishing.com/a/27931/}
}