APA (7th ed.) Zitazioa
Aune, B. (1991). Knowledge of the external world. Routledge.
Chicago Style (17th ed.) Zitazioa
Aune, Bruce. Knowledge of the External World. London ; New York: Routledge, 1991.
MLA (9th ed.) Zitazioa
Aune, Bruce. Knowledge of the External World. Routledge, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.