Esser, Samuel J. 1964. De Uma-Taal (West Midden-Celebes) Spraakkunstige Schets en Teksten. 's-Gravenhage: M. Nijhoff.
@book{Esser-1964, address = {'s-Gravenhage}, author = {Esser, Samuel J.}, publisher = {M. Nijhoff}, title = {De Uma-Taal (West Midden-Celebes) Spraakkunstige Schets en Teksten}, year = {1964}, iso_code = {ppk}, olac_field = {general_linguistics; phonetics; syntax; typology; phonology}, wals_code = {uma} }