Weiten, W. (2000). Psychology: Themes and variations (4th.ed.). Wadsworth.
Lua i Stíl Chicago (17ú heag.)Weiten, Wayne. Psychology: Themes and Variations. 4th.ed. Belmont: Wadsworth, 2000.
Lua MLA (9ú heag.)Weiten, Wayne. Psychology: Themes and Variations. 4th.ed. Wadsworth, 2000.
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