@book { TheIncorporationofNigerianSignsinDeafEducationinNigeria,
    title = "The Incorporation of Nigerian Signs in Deaf Education in Nigeria",
    subtitle = "A Pilot Study- Part 1 and 2",
    author = "Paulina Ada {Ajavon}",
    year = "2003",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1507295"
}