@book { EnglishinSouthAfrica,
    title = "English in South Africa",
    subtitle = "Focusing on Linguistic Features of Black South African English",
    author = "Hildegard {Schnell}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640346240",
    url = "https://www.hausarbeiten.de/document/128948"
}