@book { DanOaklandStory19DerGeheimbund,
    title = "Dan Oakland Story 19: Der Geheimbund",
    author = "U. H. {Wilken}",
    year = "2022",
    publisher = "Blitz-Verlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1290841"
}