APA (7th ed.) Zitazioa
Spence, L. (1912). The civilization of ancient México. University Press.
Chicago Style (17th ed.) Zitazioa
Spence, Lewis. The Civilization of Ancient México. Cambridge: University Press, 1912.
MLA (9th ed.) Zitazioa
Spence, Lewis. The Civilization of Ancient México. University Press, 1912.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.