APA (7th ed.) Zitazioa

Herrick. Esteban. University of New Mexico Press.

Chicago Style (17th ed.) Zitazioa

Herrick. Esteban. University of New Mexico Press.

MLA (9th ed.) Zitazioa

Herrick. Esteban. University of New Mexico Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.