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 Sign
Lewis, Gary Simons, and Charles Fennig. 18; SIL International. Skinner, Platt. 1859. The Mute and the Deaf. Solomon, Andrea. Cultural and Sociolinguistic