Cook, T. L. 1969. The Pronunciation of Efik for Speakers of English. Bloomington: Indiana University Press.
@book{Cook-1969a, address = {Bloomington}, author = {Cook, T. L.}, publisher = {Indiana University Press}, title = {The Pronunciation of Efik for Speakers of English}, year = {1969}, iso_code = {efi}, olac_field = {typology; phonetics; general_linguistics; phonology}, wals_code = {efi} }