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Chihara, Charles S. Ontology and the Vicious-Circle Principle. Cornell University Press, 1973.
Copi, Irving Marmer. The Theory of Logical Types. Routledge & Kegan Paul, 1971.
Grayling, A. C. Philosophy. Oxford University Press, 1998.
Shapiro, Stewart. Thinking about Mathematics: The Philosophy of Mathematics. Oxford University Press, 2000.
Tiles, Mary. Mathematics and the Image of Reason. Routledge, 1991, https://www.vlebooks.com/vleweb/product/openreader?id=GlasgowUni&isbn=9781134967728.
