@book { DieFhrungskraftalsCoach,
    title = "Die Führungskraft als Coach",
    author = "",
    year = "2010",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640609758",
    url = "https://www.hausarbeiten.de/document/149874"
}