APA (7th ed.) Citation

Aaron, R. I. (1952). The theory of Universals. Clarendon Pr..

Chicago Style (17th ed.) Citation

Aaron, R. I. The Theory of Universals. Oxford: Clarendon Pr., 1952.

MLA (9th ed.) Citation

Aaron, R. I. The Theory of Universals. Clarendon Pr., 1952.