@book { DasModelldesInnerenTeamsnachProfDrFriedemannSchulzvonThun,
    title = "Das Modell des Inneren Teams nach Prof. Dr. Friedemann Schulz von Thun",
    author = "Klaus {Hofbauer}",
    year = "2003",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638168052",
    url = "https://www.hausarbeiten.de/document/10356"
}