Guilford, J. P. "Preparation of Item Scores for Correlation between Individuals in a Q Factor Analysis." A paper read at the annual convention of the Society of Multivariate Experimental Psychologists, November, 1961.
2.
Holley, J. W. "A Study of the Relationship between Q and R Factors." Unpublished paper, University of Göteborg, 1963.
3.
Holley, J. W. "A Reply to Some Comments of Norman Cliff." EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT, XXIV (1964), 313-317.
4.
McClung, Joan G. "Dimensional Analysis of Inventory Responses in the Establishment of Occupational Personality Types ." Unpublished doctoral dissertation, University of Southern California, 1963.