@book { Kundenbindungsmanagement,
    title = "Kundenbindungsmanagement",
    subtitle = "Potentiale marketingpolitischer Instrumentarien am Beispiel der Fußball-Bundesliga",
    author = "Lars {von Hugo}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832491345",
    url = "https://m.diplom.de/document/223903"
}