Williamson, Kay. 1969. Igbo. In Dunstan, E. (ed.), Twelve Nigerian Languages: A Handbook on Their Sound Systems for Teachers of English, 85–96. London: Longmans; Africana Publishing.
@incollection{williamson1969,
address = {London},
author = {Williamson, Kay},
booktitle = {Twelve Nigerian Languages: A Handbook on Their Sound Systems for Teachers of English},
editor = {Dunstan, E.},
pages = {85–96},
publisher = {Longmans; Africana Publishing},
title = {Igbo},
year = {1969}
}