H. J.  Porter, The North Carolina marine and estuarine Mollusca - an atlas of occurrence. Morehead City: University of North Carolina, Institute of Marine Sciences, 1974, p. 351.

K. H.  Barnard, ?Contributions to the knowledge of South African marine Mollusca. Part 7. Revised fauna list?, Annals of the South African Museum, vol. 47, pp. 663-781, 1974.

T. R.  Abbott, American seashells: the marine Mollusca of the Atlantic and Pacific coasts of North America, 2nd ed. New York: Van Nostrand Reinhold Company, 1974, p. 541.

T. R.  Abbott, American seashells: the marine Mollusca of the Atlantic and Pacific coasts of North America, 2nd ed. New York: Van Nostrand Reinhold Company, 1974, p. 541.

K. H.  Barnard, ?Contributions to the knowledge of South African marine Mollusca. Part 7. Revised fauna list?, Annals of the South African Museum, vol. 47, pp. 663-781, 1974.

H. J.  Porter, The North Carolina marine and estuarine Mollusca - an atlas of occurrence. Morehead City: University of North Carolina, Institute of Marine Sciences, 1974, p. 351.