@book { DerZusammenhangzwischenInvolvementundKundenzufriedenheit,
    title = "Der Zusammenhang zwischen Involvement und Kundenzufriedenheit",
    author = "Fabian {von Loewenfeld}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832419547",
    url = "https://m.diplom.de/document/217798"
}