Bourne , L. E., & Ekstrand , B. R. (1981). Psychology: Its principles and meanings (4th ed.). Holt, Rrinehart and Winston.
Chicago-čujuhus (17. p.)Bourne , Lyle E., juo Bruce R. Ekstrand. Psychology: Its Principles and Meanings. 4th ed. New York: Holt, Rrinehart and Winston, 1981.
MLA-čujuhus (9. p.)Bourne , Lyle E., juo Bruce R. Ekstrand. Psychology: Its Principles and Meanings. 4th ed. Holt, Rrinehart and Winston, 1981.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.