Feldman, R. S. (2021). Understanding psychology (Fifteenth edition.). McGraw-Hill Education.
Lua i Stíl Chicago (17ú heag.)Feldman, Robert S. Understanding Psychology. Fifteenth edition. New York, NY: McGraw-Hill Education, 2021.
Lua MLA (8ú heag.)Feldman, Robert S. Understanding Psychology. Fifteenth edition. McGraw-Hill Education, 2021.
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