1. BARTLETT, N. R. (1994). Octopuses and students. History of Psychology Newsletter, 26, 2, 37–51.
2. BOSWELL, F. P. (1947). Trial and error learning. Psychology Review, 54, 282– 296.
3. CONSTITUTION of the American Psychological Association (with appended Members of the American Psychological Association). (1908). Printed at Smith College, Northampton MA and distributed to the members by the secretary, A. H. Pierce. 4 pages. American Psychological Association, Washington DC.
4. SWARTZ, P. (1996). Letter to Neil Bartlett, 19 May. (Bartlett, personal files).