HUFFMAN, K., VERNOY, M., & VERNOY, J. (1994). Psychology in action.-- ed.3. John Wiley and Sons.
Lua i Stíl Chicago (17ú heag.)HUFFMAN, Karen, Mark VERNOY, agus Judith VERNOY. Psychology in Action.-- Ed.3. New York: John Wiley and Sons, 1994.
Lua MLA (9ú heag.)HUFFMAN, Karen, et al. Psychology in Action.-- Ed.3. John Wiley and Sons, 1994.
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