Emerson, W. K. The American Museum of Natural History guide to shells. Land, freshwater, and marine, from Nova Scotia to Florida.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEmerson, William K. The American Museum of Natural History Guide to Shells. Land, Freshwater, and Marine, from Nova Scotia to Florida.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEmerson, William K. The American Museum of Natural History Guide to Shells. Land, Freshwater, and Marine, from Nova Scotia to Florida.
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