Westrum, Peter N. 1988. A grammatical sketch of Berik. Irian: Bulletin of Irian Jaya 16. 133-181.
@article{sinnemakizeromarking-Westrum1988,
author = {Westrum, Peter N.},
journal = {Irian: Bulletin of Irian Jaya},
pages = {133-181},
title = {A grammatical sketch of Berik},
volume = {16},
year = {1988}
}