Tohutoro APA (7th ed.)

Aaron, R. I. (1967). The theory of universals (2a. ed.). Oxford University.

Tohutoru Kātū Chicago (17th ed.)

Aaron, Richard I. The Theory of Universals. 2a. ed. Londres: Oxford University, 1967.

Tohutoro MLA (9th ed.)

Aaron, Richard I. The Theory of Universals. 2a. ed. Oxford University, 1967.