Buechel, Eugene, 1939 A Grammar of Lakota: The Language of the Teton Sioux Indians. Saint Francis Mission.
Cantoni, Gina (ed.), 1996 Stabilizing Indigenous Languages. Flagstaff: Northern Arizona
University.
Crawford, James, 1996 “Seven Hypotheses on Language Loss: Causes and Cures”, in:
G. Cantoni (ed.), 52-68.
Crawford, James, 1998 “Endangered Native American Languages”, in: T. Ricento – B. Burnaby (eds), 151-166.
Crystal, David, 2000 Language Death. Cambridge: Cambridge University Press.
Dixon, Robert M. W., 1997 The Rise and Fall of Languages. Cambridge: Cambridge University Press.
Fishman, Josua A., 1991 Reversing Language Shift. Clevedon: Multilingual Matters.
Hakuta, Kenji, Bilingualism and Bilingual Education: A Research Perspective. Washington,
DC: Delta Systems & the Center for Applied Linguistics.
Hyde, George E., 1975 Red Cloud’s Folk: A History of the Oglala Sioux Indians. Norman:
University of Oklahoma Press.
Krauss, Michael, 1992 “The World’s Languages in Crisis”, Language 68, 1-42.
Krauss, Michael, 1996 “Status of Native American Language Endargerment”, in: G. Cantoni
(ed.), 16–21.
Nettle, Daniel -- Suzanne Romaine, 2000 Vanishing Voices. The Extinction of World’s Languages.Oxford: Oxford University Press.
Reyhner, John (ed.), 1997 Teaching Indigenous Languages. Flagstaff: Northern Arizona University.
Reyhner, John (ed.), 1999 Revitalizing Indigenous Languages. Flagstaff: Northern Arizona
University.
Ricento, Thomas -- Barbara Burnaby (eds.), 1998 Language and Politics in the U.S. and
Canada: Myth and Reality. Mahwah: Lawrence Erlbaum Associates.
Rood, David S. -- Allan R. Taylor, 1996 “Sketch of Lakhota, a Siouan Language”, Handbook
of North American Indians (Languages). Washington DC: Smithsonian Institution, 440-482.
Taylor, Colin E., 1994 The Plains Indians: A Cultural and Historical View of the North American Plains Tribes of the Pre-Reservation Period. New York: Crescent Books.