1. Allport, G. W. (1942). The use of personal documents in psychological science. New York: Social Science Research Council.
2. Amundsen, R. (1912). The South Pole (2 vols.). London: John Murray.
3. Buros, O. K. (Ed.). (1972). The seventh mental measurements yearbook. Highland Park, NJ: Gryphon Press.
4. Byrd, R. E. (1938). Alone. New York: Putnam.
5. Cherry-Garrard, A. (1922). The worst journey in the world: Antarctic 1910–1913. London: Scott Polar Research Institute and Blandford Press.