@book { GewaltfreieKommunikationEineSprachedesLebens,
    title = "Gewaltfreie Kommunikation - Eine Sprache des Lebens",
    author = "Rebecca {Kahl} and Jessica {Kröll}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640985425",
    url = "https://www.hausarbeiten.de/document/177085"
}