1. Theophrastus and the Greek Physiological Psychology before Aristotle;Stratton,1917
2. Greek Theories of Elementary Cognition from Alcmaeon to Aristotle;Beare,1906
3. Galen on Sense Perception;Siegel,1970
4. Medieval Psychology;Kemp,1990
5. The Senses in Late Medieval England;Woolgar,2006