Atoyebi, Joseph Dele. 2009. A reference grammar of Ọ̀kọ: a West Benue-Congo language of North-Central Nigeria. (Doctoral dissertation, Universität Leipzig; 444pp.)
@phdthesis{gAtoyebiOko2009,
author = {Atoyebi, Joseph Dele},
pages = {444},
school = {Universität Leipzig},
title = {A reference grammar of Ọ̀kọ: a West Benue-Congo language of North-Central Nigeria},
year = {2009}
}