@book { Redeangstberwinden,
    title = "Redeangst überwinden",
    subtitle = "Gelassen und sicher präsentieren. Von Redeangst zu Redespaß",
    author = "Uwe {Hampel}",
    year = "2018",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/439177"
}