Cook, John W.
Wittgenstein's metaphysics
Cambridge University Press , 1994
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Vaske, Martin O.
An introduction to metaphysics
McGraw-Hill, 1963
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Metaphysics: an anthology
edited by Jaegwon Kim
Blackwell Publishing, 1999
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Koons, Robert C
Metaphysics: the fundamentals
Malden, MA : Wiley-Blackwell, 2015
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Loux, Michael J.
Metaphysics: a contemporary introduction
Routledge, 2002
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