Radick, G. Is the theory of natural selection independent of its history?: Gregory Radick. The Cambridge Companion to Darwin.(2006).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRadick, Gregory. "Is the Theory of Natural Selection Independent of Its History?: Gregory Radick." The Cambridge Companion to Darwin.(2006) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रRadick, Gregory. "Is the Theory of Natural Selection Independent of Its History?: Gregory Radick." The Cambridge Companion to Darwin.(2006), .
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