Laycock, D. C. 1965. Three Upper Sepik Phonologies. Oceanic Linguistics 4. 113–117.
@article{laycock1965,
author = {Laycock, D. C.},
journal = {Oceanic Linguistics},
pages = {113–117},
title = {Three Upper Sepik Phonologies},
volume = {4},
year = {1965}
}