Abbott, R. (1989). Compendium of landshellsa color guide to more than 2,000 of the worlds terrestrial shellsR.Tucker Abbott. American Malacologists.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAbbott, R.Tucker. Compendium of Landshellsa Color Guide to More than 2,000 of the Worlds Terrestrial ShellsR.Tucker Abbott. American Malacologists, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAbbott, R.Tucker. Compendium of Landshellsa Color Guide to More than 2,000 of the Worlds Terrestrial ShellsR.Tucker Abbott. American Malacologists, 1989.
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