Ray, Sidney H. 1931. A Grammar of the Kiwai Language, Fly Delta, Papua: with a Kiwai Vocabulary. Port Moresby: Baker.
@book{sinnemakizeromarking-Ray1931, address = {Port Moresby}, author = {Ray, Sidney H.}, publisher = {Baker}, title = {A Grammar of the Kiwai Language, Fly Delta, Papua: with a Kiwai Vocabulary}, year = {1931} }