@book { NachhilfeinSachenLiebe,
    title = "Nachhilfe in Sachen Liebe",
    author = "Sigrun {Dahmer}",
    year = "2022",
    publisher = "dp DIGITAL PUBLISHERS GmbH",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/1185705"
}