APA (7th ed.) Citation

Aaron, R. I. (1967). The theory of universals (2nd ed.). Clarendon Press.

Chicago Style (17th ed.) Citation

Aaron, Richard Ithamar. The Theory of Universals. 2nd ed. Oxford: Clarendon Press, 1967.

MLA (9th ed.) Citation

Aaron, Richard Ithamar. The Theory of Universals. 2nd ed. Clarendon Press, 1967.