@book { TouristischesB2BMarketinginderBeziehungReiseveranstalterReisemittler, title = "Touristisches B2B Marketing in der Beziehung Reiseveranstalter – Reisemittler", author = "Linda {Dithmer}", year = "2009", publisher = "GRIN Verlag", address = "München, Germany", doi = "10.3239/9783640507368", url = "https://www.hausarbeiten.de/document/140566" }