Gaya APA

Hjelle, L, A., Ziegler, D, J. (1992). Personality Theories : Basic Assumptions Research, and Application, 3rd Ed (3rd. Ed.). New York: McGraw-Hill.

Gaya MLA

Hjelle, Larry, A.., Ziegler, Daniel, J.. "Personality Theories : Basic Assumptions Research, and Application, 3rd Ed". 3rd. Ed. New York: McGraw-Hill, 1992. Text.