Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·

Endangered Languages of the United States ( pp. 108-130 ) . Christopher Rogers, Naomi Palosaari and Lyle Campbell (2010) · In Atlas of the World’s Languages in Danger of Disappearing edited by Christopher Moseley · UNESCO

North America ( pp. 7-41 ) . Victor Golla and Ives Goddard and Lyle Campbell and Marianne Mithun and Mauricio Mixco (2008) · In Atlas of the World's Languages edited by Chris Moseley and Ron Asher · Routledge

The World Atlas of Language Structures . (2005) · edited by Bernard Comrie and David Gil and Martin Haspelmath and Matthew S. Dryer · Oxford University Press

North America ( pp. 1-96 ) . Victor Golla (2007) · In Encyclopedia of the World's Endangered Languages edited by C. Moseley · London & New York: Routledge

California Indian Languages ( pp. 61-200 ) . Victor Golla (2011) · University of California Press

The Shasta-Achumawi: A New Linguistic Stock, with Four New Dialects ( pp. 213-217 ) . Roland B. Dixon (1905) · American Anthropologist. 7 (2) ·

Reconstructing Achumawi and Atsugewi: Proto-Palaihnihan revisited . Jeff Good and Teresa McFarland and Mary Paster (2003) ·

Achumawi ( pp. 225-235 ) . D. L. Olmsted and Omer C. Stewart (1978) · In California Handbook of North American Indians · Vol. 8 · edited by Robert F. Heizer · Smithsonian Institution, Washington:

The Achumawi Language ( pp. 77-120 ) . Jaime de Angulo and L. S. Freeland (1930) · International Journal of American Linguistics. 6 (2) ·

Loon, coyote, and fox (Ajumawi) ( pp. 66-70 ) . Olmsted, David L. (1977) · In Northern California Texts Native American Text Series · Vol. 2:2 · edited by Victor Golla and Shirley Silver · Chicago: University of Chicago Press

A History of Palaihnihan Phonology . Olmsted, David L. (1964) · University of California Press

Achumawi Dictionary . Olmsted, David L. (1966) · University of California Press

The Achumawi Language ( pp. 77-120 ) . de Angulo, Jaime and Freeland, L. S. (1931) · International Journal of American Linguistics. 6 (2) ·

Loon, coyote, and fox (Ajumawi) ( pp. 66-70 ) . Olmsted, David L. (1977) · Northern California Texts, International Journal of American Linguistics, Native American Text Series. 2 (2) ·