APA (7th ed.) Zitazioa

Rivera. On Dogs and Dying. Purdue University Press.

Chicago Style (17th ed.) Zitazioa

Rivera. On Dogs and Dying. Purdue University Press.

MLA (9th ed.) Zitazioa

Rivera. On Dogs and Dying. Purdue University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.