APA (7th ed.) Zitazioa

Piekut. Tomorrow Is the Question. University of Michigan Press.

Chicago Style (17th ed.) Zitazioa

Piekut. Tomorrow Is the Question. University of Michigan Press.

MLA (9th ed.) Zitazioa

Piekut. Tomorrow Is the Question. University of Michigan Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.