Crutchfield, R. S., & Krech, D. (1948). Theory and problems of social psychology, by David Krech and Richard S. Crutchfield. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Crutchfield, Richard S., agus David Krech. Theory and Problems of Social Psychology, by David Krech and Richard S. Crutchfield. New York: McGraw-Hill, 1948.
Lua MLA (9ú heag.)Crutchfield, Richard S., agus David Krech. Theory and Problems of Social Psychology, by David Krech and Richard S. Crutchfield. McGraw-Hill, 1948.
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