@book { FernandodeRojasLaCelestina,
    title = "Fernando de Rojas - 'La Celestina'",
    author = "Bettina {Müller}",
    year = "2010",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640688166",
    url = "https://www.hausarbeiten.de/document/155886"
}