1.
Shapiro, S. Thinking about mathematics: the philosophy of mathematics. (Oxford University Press, 2000).
2.
Bostock, D. Philosophy of mathematics: an introduction. (Wiley-Blackwell, 2009).
3.
Tiles, M. Mathematics and the image of reason. vol. Philosophical issues in science (Routledge, 1991).
4.
Grayling, A. C. Philosophy. (Oxford University Press, 1998).
5.
Benacerraf, P. & Putnam, H. Philosophy of mathematics: selected readings. (Cambridge University Press, 1983).
6.
Copi, I. M. The theory of logical types. vol. Monographs in modern logic series (Routledge & Kegan Paul, 1971).
7.
Chihara, C. S. Ontology and the vicious-circle principle. (Cornell University Press, 1973).
