@book { PdagogischeQualittinKindertageseinrichtungen,
    title = "Pädagogische Qualität in Kindertageseinrichtungen",
    author = "Tanja {Biermann}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836610339",
    url = "https://m.diplom.de/document/225628"
}