@book { LebenundEntwicklungdesKindesinderPflegefamilie,
    title = "Leben und Entwicklung des Kindes in der Pflegefamilie",
    author = "Vanessa {Bigge}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832499273",
    url = "https://m.diplom.de/document/225044"
}