Keen, A. Myra and James H. McLean. Sea Shells of Tropical West America: Marine Mollusks from Baja California to Peru. Stanford, Calif.: Stanford University Press, 1971.

Keen, A. Myra and James H. McLean. Sea Shells of Tropical West America: Marine Mollusks from Baja California to Peru. Stanford, Calif.: Stanford University Press, 1971.