@book { WatzlawickGesprchsfhrungBeratung,
    title = " Watzlawick + Gesprächsführung / Beratung",
    author = "Christian {Biendl}",
    year = "2001",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640014552",
    url = "https://www.hausarbeiten.de/document/103075"
}