APA (7th ed.) Zitazioa

Levi, E. H. (1968). An introduction to legal reasoning. University of Chicago.

Chicago Style (17th ed.) Zitazioa

Levi, Edward H. An Introduction to Legal Reasoning. Chicago: University of Chicago, 1968.

MLA (9th ed.) Zitazioa

Levi, Edward H. An Introduction to Legal Reasoning. University of Chicago, 1968.