1. Baler, L. A. Training for research in community mental health. In P. E. Cook (Ed.),Community psychology and community mental health. San Francisco: Holden-Day, 1970.
2. Bath, K. E. The matching of factors derived from individual P-technique analyses. Unpublished master's thesis, West Virginia University, 1971.
3. Cattell, R. B. A quantitative analysis of the changes in the cultural pattern of Great Britain, 1837?1937, by P-technique.Acta Psychologica, 1953,9, 99?121.
4. Cattell, R. B. The structuring of change by P-technique and incremental R-technique. In C. W. Harris (Ed.),Problems in measuring change. Madison, Wis.: University of Wisconsin Press, 1963.
5. Cattell, R. B.The scientific analysis of personality. Baltimore: Penguin Books, 1965.