1.
Shapiro S. Thinking about mathematics: the philosophy of mathematics. New York: Oxford University Press; 2000.
2.
Bostock D. Philosophy of mathematics: an introduction. Chichester: Wiley-Blackwell; 2009.
3.
Tiles M. Mathematics and the image of reason [Internet]. London: Routledge; 1991. Available from: https://www.vlebooks.com/vleweb/product/openreader?id=GlasgowUni&isbn=9781134967728
4.
Grayling AC. Philosophy. Oxford: Oxford University Press; 1998.
5.
Benacerraf P, Putnam H. Philosophy of mathematics: selected readings. 2nd ed. Cambridge: Cambridge University Press; 1983.
6.
Copi IM. The theory of logical types. London: Routledge & Kegan Paul; 1971.
7.
Chihara CS. Ontology and the vicious-circle principle. Ithaca, N.Y.: Cornell University Press; 1973.
