APA (7th ed.) Zitazioa

Freydberg. David Hume. State University of New York Press.

Chicago Style (17th ed.) Zitazioa

Freydberg. David Hume. State University of New York Press.

MLA (9th ed.) Zitazioa

Freydberg. David Hume. State University of New York Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.