APA (7th ed.) Zitazioa
Willey, G. R. (1966). An introduction to American archaeology. Prentice-Hall.
Chicago Style (17th ed.) Zitazioa
Willey, Gordon R. An Introduction to American Archaeology. Nueva Jersey: Prentice-Hall, 1966.
MLA (9th ed.) Zitazioa
Willey, Gordon R. An Introduction to American Archaeology. Prentice-Hall, 1966.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.