Cita APA (7a ed.)
Byers, D. S. (1967). The prehistory of the Tehuacan Valley. University of Texas Press.
Cita Chicago Style (17a ed.)
Byers, Douglas S. The Prehistory of the Tehuacan Valley. Austin, London: University of Texas Press, 1967.
Cita MLA (9a ed.)
Byers, Douglas S. The Prehistory of the Tehuacan Valley. University of Texas Press, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.