APA (7th ed.) Zitazioa

Armstrong, D. (1973). Belief, truth and knowledge. C.U.Pr..

Chicago Style (17th ed.) Zitazioa

Armstrong, D.M. Belief, Truth and Knowledge. Cambridge: C.U.Pr., 1973.

MLA (9th ed.) Zitazioa

Armstrong, D.M. Belief, Truth and Knowledge. C.U.Pr., 1973.