Francis Jeffry Pelletier Renée Elio Philip Hanson Is Logic all in our Heads? From Naturalism to Psychologism. 3-66 2008 88 Studia Logica 1 http://dx.doi.org/10.1007/s11225-008-9098-5 db/journals/sLogica/sLogica88.html#PelletierEH08