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}
}