Cita APA (7th ed.)

Royce, J. R., & Powell, A. (1983). Theory of personality and individual differences: Factors, systems, and processes. Prentice-Hall.

Cita Chicago (17th ed.)

Royce, Joseph R., i Arnold Powell. Theory of Personality and Individual Differences: Factors, Systems, and Processes. Englewood Cliffs, N.J: Prentice-Hall, 1983.

Cita MLA (9th ed.)

Royce, Joseph R., i Arnold Powell. Theory of Personality and Individual Differences: Factors, Systems, and Processes. Prentice-Hall, 1983.