APA (7th ed.) Zitazioa

Alexy Robert, Translated by Alder Ruth, & Maccormick, N. (1989). A theory of legal argumentation: The theory of legal justification. Clarendon Pr.

Chicago Style (17th ed.) Zitazioa

Alexy Robert, Translated by Alder Ruth, eta Neil Maccormick. A Theory of Legal Argumentation: The Theory of Legal Justification. Oxford: Clarendon Pr, 1989.

MLA (9th ed.) Zitazioa

Alexy Robert, et al. A Theory of Legal Argumentation: The Theory of Legal Justification. Clarendon Pr, 1989.