@book { FremdenverkehrimWandel,
    title = "Fremdenverkehr im Wandel",
    subtitle = "Referate einer Studientagung des Gottlieb-Duttweiler-Instituts in Rüschlikon-Zürich",
    author = "Jost {Krippendorf}",
    year = "1976",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069599"
}