@book { SpracheundGesellschaftimWandel,
    title = "Sprache und Gesellschaft im Wandel",
    author = "Daniela {Pietrini}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b12563",
    url = "https://www.peterlang.com/document/1050457"
}