@book { KlientenzentrierteGesprchsfhrung,
    title = "Klientenzentrierte Gesprächsführung",
    author = "Timo {Thiel}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640986613",
    url = "https://www.hausarbeiten.de/document/177161"
}