@book { GrundlagendesstrategischenMarketingsimDestinationsmanagement,
    title = "Grundlagen des strategischen Marketings im Destinationsmanagement",
    author = "André {Schaffer}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832430511",
    url = "https://m.diplom.de/document/218765"
}