APA aipamena

Williamson, T., & O'Hear, A. (2009). Knowledge of counterfactuals. Cambridge University Press.

Chicago Style aipamena

Williamson, T., and A. O'Hear. Knowledge of Counterfactuals. Cambridge University Press, 2009.

MLA aipamena

Williamson, T., and A. O'Hear. Knowledge of Counterfactuals. Cambridge University Press, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.