Smith, R. B. (1975). The psychology of human behavior: A psychology guide for psychology (2nd ed.). Kendall/Hunt.
Lua i Stíl Chicago (17ú heag.)Smith, Robert B. The Psychology of Human Behavior: A Psychology Guide for Psychology. 2nd ed. Dubuque, Iowa: Kendall/Hunt, 1975.
Lua MLA (9ú heag.)Smith, Robert B. The Psychology of Human Behavior: A Psychology Guide for Psychology. 2nd ed. Kendall/Hunt, 1975.
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