APA (7th ed.) Zitazioa

Lear, J. (1990). Aristotle and logical theory. University Pr..

Chicago Style (17th ed.) Zitazioa

Lear, Jonathan. Aristotle and Logical Theory. Cambridge: University Pr., 1990.

MLA (9th ed.) Zitazioa

Lear, Jonathan. Aristotle and Logical Theory. University Pr., 1990.