Linguistic Society of America. Committee on Endangered Languages and their Preservation., L.S. of A.C. on E.L. and their P. and Yamamoto, .A.Y. 1996. Endangered Languages Data Summary. Kansas Working Papers in Linguistics. 21, (Jan. 1996), 159–229. DOI:https://doi.org/10.17161/KWPL.1808.461.