Willem J. CentralSiberianYupik as a polysynthetic language. Rowicka, G. J. Canada: Language Situation. Brown, Keith (编). Encyclopedia of Language & Linguistics
Retrieved 2008-08-25. Jacobson, Steven. CentralYupik and the Schools – A Handbook for Teachers. Alaska Native Language Center, University of Alaska Fairbanks
平原印第安人手语(英語:Plains Indian Sign Language,PISL;法語:Langue des Signes Indienne des Plaines;西班牙語:Lenguaje de Signos Indio de las Llanuras),又称平原手语、平原手势谈话(Plains