Valin, Robert van. Aspects of Lakhota Syntax: A Study of Lakhota (Teton Dakota) Syntax and Its Implications For Universal Grammar. PhD thesis, University of California at Berkeley, 1977.

Eijk, Jan P. van. 2001. "An Annotated Bibliography of Salish Linguistics."

Eijk, J. van. The Lillooet Language. PhD thesis, University of Amsterdam, 1985.

Eijk, Jan van. 1997. "The Lillooet Language: Phonology, Morphology Syntax." Vancouver: University of British Columbia Press.

Willem Joseph De Reuse. 1994. "Siberian Yupik Eskimo: the Language and Its Contacts with Chukchi." Salt Lake City: University of Utah Press.

De Reuse, Willem J. 1990. "A Supplementary Bibliography of Lakhota Language and Linguistics (1887-1990)." In Kansas Working Papers in Linguistics, 15 , no. 2: 146-165.

Fernández De miranda, María Teresa and Benjamin F. Elson. 1960. "Gramática Del Popoluca De La Sierra." 6: 133. Xalapa: Universidad Veracruzana.

Angulo, Jaime de and L. S. Freeland. 1930. "The Achumawi Language." In International Journal of American Linguistics, 6 , no. 2: 77-120.

Angulo, Jaime de. 1933. "The Chichimeco Language (Central Mexico)." In International Journal of American Linguistics, 7 , no. 3/4: 152-194.

d'Azevedo, Warren L. 1986. "Washoe." In Great Basin, edited by Warren L. D'azevedo. 11: 466-498. Smithsonian Institution, Washington:.