The theory of universals,
by Richard I. Aaron.
APA Citation
Aaron, R. Ithamar. (1967). The theory of universals. 2nd ed. London: Clarendon.
MLA Citation
Aaron, Richard Ithamar, 1901-. The Theory of Universals. 2nd ed. London: Clarendon, 1967.
Warning: These citations may not always be complete (especially for serials).