Darwin, F., & Simpson, G. G. (1959). The life and letters of Charles Darwin: Including an autobiographical chapter. New York: Basic Books.
Παραπομπή Chicago StyleDarwin, Francis, and George Gaylord Simpson. The Life and Letters of Charles Darwin: Including an Autobiographical Chapter. New York: Basic Books, 1959.
Παραπομπή MLADarwin, Francis, and George Gaylord Simpson. The Life and Letters of Charles Darwin: Including an Autobiographical Chapter. New York: Basic Books, 1959.
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