@book { Stelldirvorundwerdereich,
    title = "Stell dir vor und werde reich",
    author = "Katrine {Hütterer} and Norman P. {Fischer}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1130167"
}