Bernstein, D., & Stec, A. M. (1999). Psychology: Fields of application. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Bernstein, Douglas, agus Astrid M. Stec. Psychology: Fields of Application. Boston: Houghton Mifflin, 1999.
Lua MLA (9ú heag.)Bernstein, Douglas, agus Astrid M. Stec. Psychology: Fields of Application. Houghton Mifflin, 1999.
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