APA (7th ed.) Zitazioa
Crawford, M. (1976). The Tlaxcaltecans: Prehistory, demography, morphology and genetics. University of Kansas.
Chicago Style (17th ed.) Zitazioa
Crawford, M.H. The Tlaxcaltecans: Prehistory, Demography, Morphology and Genetics. Lawrence, Kansas: University of Kansas, 1976.
MLA (9th ed.) Zitazioa
Crawford, M.H. The Tlaxcaltecans: Prehistory, Demography, Morphology and Genetics. University of Kansas, 1976.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.