@book { DieMagiedergutenAusstrahlung,
    title = "Die Magie der guten Ausstrahlung",
    author = "Werner {Knigge}",
    year = "2011",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403322"
}