| i)
D. W. Hamlyn. |
Metaphysics . Cambridge University Press. 1994 |
| ii)
Bruce Aunm me |
Metaphysics - The Elements . Minneapolis: University of Minnesota Press. 1995 |
| iii)
A. J. Ayer |
Language, Truth and Logic . New York: Dover Publications. 1952. |
| iv)
Lugwig Wittgenstein |
Philosophical Investigations . Basil Blackwell. 1988. |
| v)
Immanuel Kant |
Prolegomena to Any Future Metaphysics . Macmillan Publishing Co. 1988. |
| vi)
Plato |
The Republic . Penguin Books. 1987. |
| J. A. I. Bewaji, |
An Introduction to Theory of Knowledge . Ibadan , Nigeria : Hope Publications Ltd. 2007 |
| II)
Other Readings |
|
| i)
Peter Van Inwager |
Metaphysics. Boulder, Colorado: Western Press. 1993. |
| ii)
Reginald E. Allen - Editor |
Greek Philosophy: Thales to Aristotle . Free Press. 1991. |
| iii)
Anthony Flew |
An Introduction to Western Philosophy . Thomas and Hudson. 1991 |
| III)
General References |
| i) Jegwon Kim and Ernest
Sosa - |
Editor, A Companion to Metaphysics.
Blackwell. Cambridge, Mass., 02142, 1995. |
| ii) John Cottingham |
Editor, Western Philosophy
- An Anthology. 1996. |
| iii) John Passmore |
A Hundred Years of Philosophy.
Penguin Books, 1970. |