@book { MamainNtenEinSohnhilftaus,
    title = "Mama in Nöten - Ein Sohn hilft aus",
    author = "Eric {Hallissey}",
    year = "2020",
    publisher = "venusbooks",
    address = "München, Deutschland",
    url = "https://m.venusbooks.de/document/542016"
}