1. Anderson, J. E. (1965). In M. Nijhoff (Ed.), St. Augustine and being, A metaphysical essay. The Hague.
2. Arendt, H. (1978). The life of the mind. A Harvest Book.
3. Ashworth, E. J. (2013). Medieval theories of analogy. In Stanford Encyclopedia of Philosophy. https://plato.stanford.edu/entries/analogy-medieval/#2
4. Augustine. (1957). In M. P. Barvey (Ed.), Against the Academicians, trnsl. Marquette University Press.
5. Augustine. (1993). In T. Williams (Ed.), On the free choice of the will, trnsl. Hackett Publication Company.