@book { IchhabheutefreiHumusversorgtmeinenGarten,
    title = "Ich hab heute frei! Humus versorgt meinen Garten",
    author = "Sabine {Roth}",
    year = "2021",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/997115"
}