Cita APA (7th ed.)

Ekholm, G. F., & Bernal, I. (1971). Archaelogy of northern mesoamerica. University of Texas Press.

Cita Chicago (17th ed.)

Ekholm, Gordon F., i Ignacio Bernal. Archaelogy of Northern Mesoamerica. Austin: University of Texas Press, 1971.

Cita MLA (9th ed.)

Ekholm, Gordon F., i Ignacio Bernal. Archaelogy of Northern Mesoamerica. University of Texas Press, 1971.