@book { OrgenesClsicosdelPersonajedeCelestina,
    title = "Orígenes Clásicos del Personaje de Celestina",
    author = "Enrique {del Cerro Calderón}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656314288",
    url = "https://www.hausarbeiten.de/document/199780"
}