# The Ockhamization of the event sources of sound Real Version **Opening (not a real abstract):** Shoemaker, S. 1980. Causality and properties. In Time and Cause, eds. P. van Inwagen, 109–36. Dordrecht: D. Reidel. Whittle, A. 2009. Causal nominalism. In Dispositions and Causes, eds. T. Handfield,