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.