@book { SociolinguisticaspectsofthefunctioningofEnglishinpost1989Poland,
    title = "Sociolinguistic aspects of the functioning of English in post-1989 Poland",
    author = "Krzysztof {Przygonski}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01763-2",
    url = "https://www.peterlang.com/document/1047128"
}