Παραπομπή APA

Hjelle, L. A., & Daniel, J. Z. (1981). Personality theories: Basic assumptions, research and application/2e (2nd ed.). McGraw Hill.

Παραπομπή Chicago Style

Hjelle, Larry A., και J. Ziegler Daniel. Personality Theories: Basic Assumptions, Research and Application/2e. 2nd ed. London: McGraw Hill, 1981.

Παραπομπή MLA

Hjelle, Larry A., και J. Ziegler Daniel. Personality Theories: Basic Assumptions, Research and Application/2e. 2nd ed. McGraw Hill, 1981.