Irvine, W. (1972). Apes, angels, and Victorians: The story of Darwin, Huxley, and evolution. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIrvine, William. Apes, Angels, and Victorians: The Story of Darwin, Huxley, and Evolution. McGraw-Hill, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIrvine, William. Apes, Angels, and Victorians: The Story of Darwin, Huxley, and Evolution. McGraw-Hill, 1972.
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