@book { RichtigeKommunikationwillgelerntseinDasModellvonSchulzvonThun,
    title = "Richtige Kommunikation will gelernt sein: Das Modell von Schulz von Thun",
    author = "Matthias {Schrameier}",
    year = "2015",
    publisher = "BACHELOR + MASTER PUBLISHING",
    address = "Hamburg, Deutschland",
    url = "https://m.bachelor-master-publishing.de/document/298172"
}