@book { BetriebsnaheKinderbetreuungim24StundenModell,
    title = "Betriebsnahe Kinderbetreuung im 24-Stunden-Modell",
    author = "Katja {Hofstetter}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836615150",
    url = "https://m.diplom.de/document/225900"
}