Liebert, R. .., & Spiegler,Michael.D. (1990). Personality: Strategies and issues (6th ed.). Brooks/Cole Publishing Co..
Chicago-čujuhus (17. p.)Liebert, Robert .M, juo Spiegler,Michael.D. Personality: Strategies and Issues. 6th ed. California.: Brooks/Cole Publishing Co., 1990.
MLA-čujuhus (9. p.)Liebert, Robert .M, juo Spiegler,Michael.D. Personality: Strategies and Issues. 6th ed. Brooks/Cole Publishing Co., 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.