@book { LanguageshiftundCodemixing,
    title = "Language shift und Code-mixing",
    subtitle = "Deutsch-ungarisch-rumänischer Sprachkontakt in einer dörflichen Gemeinde in Nordwestrumänien",
    author = "Csilla {Szabó}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1136102"
}