Urbańczyk, Piotr. “‘Internal’ Problems of Normative Theories of Thinking and Reasoning”. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), no. 60 (August 22, 2016): 35–52. Accessed October 30, 2024. https://zfn.edu.pl/index.php/zfn/article/view/366.