@book { CameroonEnglish,
    title = "Cameroon English",
    subtitle = "Authenticity, Ecology and Evolution",
    author = "Eric Amana {Anchimbe}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101503"
}