@book { MeineliebeSchwester,
    title = "Meine liebe Schwester!",
    author = "Marianne {Acquarelli (Herausgeber)}",
    year = "2018",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1002018"
}