@book { LukaDertraurigeBlauwal,
    title = "Luka - Der traurige Blauwal",
    author = "Isla {Wynter} and Annette {Kurz}",
    year = "2023",
    publisher = "Peryton Press",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1358704"
}