@book { SyntacticVariationandUnconsciousLinguisticChange,
    title = "Syntactic Variation and Unconscious Linguistic Change",
    author = "Nadine {van den Eynden}",
    year = "1993",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1081372"
}