APA (7th ed.) Zitazioa
Paddock, J. Differentiaton of obsidian sources in Mesoamerica.
Chicago Style (17th ed.) Zitazioa
Paddock, John. Differentiaton of Obsidian Sources in Mesoamerica.
MLA (9th ed.) Zitazioa
Paddock, John. Differentiaton of Obsidian Sources in Mesoamerica.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.