@book { InnenmarketingalseinSchlsselinstrumentdesDestinationsmanagement,
    title = "Innenmarketing als ein Schlüsselinstrument des Destinationsmanagement",
    author = "Mario {König}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836613446",
    url = "https://m.diplom.de/document/225815"
}