Basauri, Carlos. (1940) "Los Opatas." In La población indìgena de México. Mexico City: Secretaria de Educación Pública.
Braniff C, Beatriz (1992). La frontera protohistorica Pima-Opata en Sonora, México: Proposiciones arqueológicas preliminares. Mexico City: Instituto Nacional de Antropología e Historia.
Hinton, Thomas B. (1959). A Survey of Indian Assimilation in Eastern Sonora. University of Arizona, Anthropological Papers, no. 4.
Hinton, Thomas B. (1969). "Remnant Tribes in Sonora: Opata, Pima, Papago, and Seri." In Handbook of Middle American Indians, edited by Robert Wauchope. Vol. 8, Ethnology, Part Two, edited by Evon Z. Vogt, 879-888. Austin: University of Texas Press.
Johnson, Jean Bassett (1950). The Opata: An Inland Tribe of Sonora. University of New Mexico Publications in Anthropology, no.6. Albuquerque: University of New Mexico Press.
Wence Angel, Jorge (1982). Los opatas y los jovas. Mexico City: Instituto Nacional Indigenista.