Universitas Cenderawasih, Summer Institute of Linguistics, & Thimbwat, E. (1979). [Berik language series]. Universitas Cenderawasih : Summer Institute of Linguistics.
Dyfyniad Arddull ChicagoUniversitas Cenderawasih, Summer Institute of Linguistics, and Esau Thimbwat. [Berik Language Series]. [Jayapura?]: Universitas Cenderawasih : Summer Institute of Linguistics, 1979.
Dyfyniad MLAUniversitas Cenderawasih, et al. [Berik Language Series]. Universitas Cenderawasih : Summer Institute of Linguistics, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.