George, J. D. (1979). Marine life: An illustrated encyclopedia of invertebrates in the sea. John Wiley and Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGeorge, J. David. Marine Life: An Illustrated Encyclopedia of Invertebrates in the Sea. John Wiley and Sons, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGeorge, J. David. Marine Life: An Illustrated Encyclopedia of Invertebrates in the Sea. John Wiley and Sons, 1979.
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