@book { Genvetudergionale,
    title = "Genève, étude régionale",
    subtitle = "Essai d'analyse sémiologique en géographie humaine",
    author = "Charles {Hussy}",
    year = "1981",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1070999"
}