Gardner, J. W. (1964). Self-renewal: The individual and the innovative society. New York: Harper & Row.
Παραπομπή Chicago StyleGardner, John W. Self-renewal: The Individual and the Innovative Society. New York: Harper & Row, 1964.
Παραπομπή MLAGardner, John W. Self-renewal: The Individual and the Innovative Society. New York: Harper & Row, 1964.
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