@book { NationalVarietiesofGermanoutsideGermany,
    title = "National Varieties of German outside Germany",
    author = "Gabrielle {Hogan-Brun}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    doi = "10.3726/978-3-0353-0117-5",
    url = "https://www.peterlang.com/document/1054457"
}