@book { GelegenheitmachtLiebeBand4,
    title = "Gelegenheit macht Liebe - Band 4",
    author = "Hannah {Stollner}",
    year = "2024",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1448833"
}