@book { EnglishPastandPresent,
    title = "English Past and Present",
    author = "Wolfgang {Viereck}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02130-1",
    url = "https://www.peterlang.com/document/1047321"
}