@book { DerGeschftsberichtalsMarketingInstrument,
    title = "Der Geschäftsbericht als Marketing-Instrument",
    author = "Tanja {Mersch}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832429355",
    url = "https://m.diplom.de/document/218659"
}