• Francis Jeffry Pelletier ed.  Kinds, Things, and Stuff: Mass Terms and Generics, Oxford University Press, New Directions in Cognitive Science Series, 2009
  • Herbert Enderton  A Mathematical Introduction to Logic, Second Edition, Academic Press, 2000


  • Helen Beebee and Nigel Sabbarton-Leary ed.  The Semantics and Metaphysics of Natural Kinds, Routledge, Routledge Studies in Metaphysics, Due in March, 2010