OKOLO, Bertram A. The History of Nigerian Linguistics A Preliminary Survey. Kansas Working Papers in Linguistics, [S. l.], v. 6, p. 99–125, 1981. DOI: 10.17161/KWPL.1808.558. Disponível em: https://journals.ku.edu/kwpl/article/view/17330.. Acesso em: 27 apr. 2024.