Systematic pluralism: a study in metaphysics
Ithaca (N.Y.) 1961. 195 S.
Will and world. A study in metaphysics
Oxford 1992. 171 S.
Relatedness. Essays in metaphysics and theology
Macon (Ga.) 1984. 178 S.
A relational metaphysics
Den Haag 1981. 228 S.
Process metaphysics
Albany (N.Y.) 1996. 213 S.
The riddle of existence: an essay in idealistic metaphysics
Lanham (Md.) 1984. 99 S.
Metaphysics in ordinary language
London 1999. 290 S.
Survey of metaphysics and esoterism
Bloomington (Ind.) 1986. 224 S.
A contemporary approach to classical metaphysics
New York 1969. 126 S.
Modes of referring and the problem of universals. An essay in metaphysics
Berkeley (Calif.) 1961. 164 S.