Jeffrey, R. C. (1992). Probability and the art of judgment. C.U.Pr..
Chicago Style (17th ed.) ZitazioaJeffrey, Richard C. Probability and the Art of Judgment. Cambridge: C.U.Pr., 1992.
MLA (9th ed.) ZitazioaJeffrey, Richard C. Probability and the Art of Judgment. C.U.Pr., 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.