@book{66546,
	author = {Tolkien, J. R. R. and Tolkien, Christopher.},
	title = {La formación de la Tierra Media },
	publisher = {Minotauro, },
	year = {1998.},
	series = {La historia de la Tierra Media ; },
	address = {Barcelona : },
	edition = {1ª ed.},
	note = {Indice.}
}