APA (7th ed.) Zitazioa

Pelka. What We Have Done. University of Massachusetts Press.

Chicago Style (17th ed.) Zitazioa

Pelka. What We Have Done. University of Massachusetts Press.

MLA (9th ed.) Zitazioa

Pelka. What We Have Done. University of Massachusetts Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.