@Book{BVMC:267992,
author = {Herrera, Fernando de},
title = {Cisnes del Betis},
publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes ; Madrid : Biblioteca Nacional, 2011},
year = {2011},
url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcqc0k6}
}