@book { DerErfolgvonPersonalmarketingimInternet,
    title = "Der Erfolg von Personalmarketing im Internet",
    author = "Bettina {Lämke}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832441753",
    url = "https://m.diplom.de/document/219796"
}