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} }