Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.