@book { DieZunge,
    title = "Die Zunge",
    subtitle = "Ihre Funktion und die Bedeutung in sprachheilpädagogischer Hinsicht.",
    author = "Cilli {Schwarz}",
    year = "1976",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069811"
}