APA (7th ed.) Zitazioa
(1967). Studies in Olmec archaeology. University of California Archaeological Research Facility.
Chicago Style (17th ed.) Zitazioa
Studies in Olmec Archaeology. Berkeley: University of California Archaeological Research Facility, 1967.
MLA (9th ed.) Zitazioa
Studies in Olmec Archaeology. University of California Archaeological Research Facility, 1967.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.