Παραπομπή APA

Hjelle, L. A., & Ziegler, D. J. (1985). Personality theories: Basic assumptions, research and applications (2nd ed.). McGraw- Hill.

Παραπομπή Chicago Style

Hjelle, Larry A., και Daniel J. Ziegler. Personality Theories: Basic Assumptions, Research and Applications. 2nd ed. London: McGraw- Hill, 1985.

Παραπομπή MLA

Hjelle, Larry A., και Daniel J. Ziegler. Personality Theories: Basic Assumptions, Research and Applications. 2nd ed. McGraw- Hill, 1985.