APA (7th ed.) Zitazioa

Hemley. Nola. University of Iowa Press.

Chicago Style (17th ed.) Zitazioa

Hemley. Nola. University of Iowa Press.

MLA (9th ed.) Zitazioa

Hemley. Nola. University of Iowa Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.