Aiken, L. R. (1985). Psychological testing and assessment (7th ed.). Allyn.
Lua i Stíl Chicago (17ú heag.)Aiken, Lewis R. Psychological Testing and Assessment. 7th ed. Boston: Allyn, 1985.
Lua MLA (9ú heag.)Aiken, Lewis R. Psychological Testing and Assessment. 7th ed. Allyn, 1985.
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