Morris, C. G. (1993). Psychology: An introduction (8th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Morris, Charles G. Psychology: An Introduction. 8th ed. Englewood Cliffs, N.J: Prentice Hall, 1993.
Lua MLA (9ú heag.)Morris, Charles G. Psychology: An Introduction. 8th ed. Prentice Hall, 1993.
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