@book { FraueninFhrungspositionen,
    title = "Frauen in Führungspositionen",
    author = "Christin {Pietsch}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656259169",
    url = "https://www.hausarbeiten.de/document/199491"
}