Blum, M. L. (1956). Industrial psychology: Its theoritical and social foundations. Harper & Row Publishers.
Lua i Stíl Chicago (17ú heag.)Blum, Milton L. Industrial Psychology: Its Theoritical and Social Foundations. New York: Harper & Row Publishers, 1956.
Lua MLA (9ú heag.)Blum, Milton L. Industrial Psychology: Its Theoritical and Social Foundations. Harper & Row Publishers, 1956.
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