Feldman, R. S. (2005). Essentials of understanding psychology (6th ed.). McGraw-Hill Higher Education.
Lua i Stíl Chicago (17ú heag.)Feldman, Robert S. Essentials of Understanding Psychology. 6th ed. Boston: McGraw-Hill Higher Education, 2005.
Lua MLA (9ú heag.)Feldman, Robert S. Essentials of Understanding Psychology. 6th ed. McGraw-Hill Higher Education, 2005.
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