@Misc{BVMC:221755, author = {Marzal, Carlos}, title = {Cuatro gotas de aceite}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, Unidad Audiovisual-Área de Comunicación, 2003}, year = {2003}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcvd6s3} }