Rankin, R. L. 1988. "Quapaw: Genetic & Areal Affiliations." In In Honor of Mary Haas: From the Haas Festival Conference on Native American Linguistics, edited by William Shipley. 629-650. Mouton de Gruyter.

Rankin, Robert L. 1994. "Notes On the Kansa Word List of Maximilian, Prince of Wied." In Kansas Working Papers in Linguistics, 19 , no. 2: 201-210.

Randoja, Tiina. The Phonology and Morphology of Halfway River Beaver. PhD thesis, University of Ottawa, 1989.

Rand, Silas Tertius. 1875. "A First Reading Book in the Micmac Language." Halifax: Nova Scotia Printing Company.

Francisco Raga Gimeno. 1995. "Introducción a La Lengua Y Cultura De Mayas (maya Yucateco)." 2: València: Universitat.

Radin, Paul. 1929. "A Grammar of the Wappo Language." 27: 1-194. Berkeley and Los Angeles: University of California Press.

Quintero, C. F. Osage Phonology and Verbal Morphology. PhD thesis, Amherst: University of Massachusetts, 1997.

Press, Margaret L. 1979. "Chemehuevi: A Grammar and Lexicon." 92: Berkeley and Los Angeles: University of California Press.

Poser, William J. 2003. "The Status of Documentation For British Columbia Native Languages." 2: British Columbia, Canada: Yinka Dene Institute, Vanderhoof.

H. Pittier De Fábrega. 1897. "Die Sprache Der Bribri-Indianer in Costa Rica." 138:VI: 1-150. Wien.