APA (7th ed.) Zitazioa
Bullard, W. R. (1970). Monographs and papers in Maya archaeology. Peabody Museum.
Chicago Style (17th ed.) Zitazioa
Bullard, William R. Monographs and Papers in Maya Archaeology. Cambridge, Massachusetts: Peabody Museum, 1970.
MLA (9th ed.) Zitazioa
Bullard, William R. Monographs and Papers in Maya Archaeology. Peabody Museum, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.