Royce, J. R., & Powell, A. (1983). Theory of personality and individual differences: Factors, systems, and processes. Prentice-Hall.
Čikaški stil citiranja (17. izdanje)Royce, Joseph R., i Arnold Powell. Theory of Personality and Individual Differences: Factors, Systems, and Processes. Englewood Cliffs, N.J: Prentice-Hall, 1983.
MLA način citiranja (9. izdanje)Royce, Joseph R., i Arnold Powell. Theory of Personality and Individual Differences: Factors, Systems, and Processes. Prentice-Hall, 1983.
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