Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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