References
- Introduction to Mathematical Philosophy Russel, Bertrand
- Plato's Philosophy of mathematic Wedberg, Anders
- Mathematical Thought: An Introduction to the Philosophy of Mathematics Beth,E.W.
- The Philosophy of Mathematics Stephan,K.
- The Philosophy of Mathematics Maziarz,E.A.
- The Philosophy of mathematic Korner,S.
- Philosophy of Mathematics Barker,S.F.
- Philosophy of Mathematics and Natural Science Weyl, Hermann