C. M.  Yonge, ?Form and habit in species of Malleus (including the "hammer oysters") with comparative observations on Isognomon isognomon?, The Biological Bulletin, vol. 135, pp. 378-405, 1968.

M.  A. Keen, ?West American mollusk types at the British Museum (Natural History), IV. Carpenter's Mazatlan collection?, The Veliger, vol. 10, pp. 389-439, 1968.

M.  A. Keen, ?West American mollusk types at the British Museum (Natural History), IV. Carpenter's Mazatlan collection?, The Veliger, vol. 10, pp. 389-439, 1968.

C. M.  Yonge, ?Form and habit in species of Malleus (including the "hammer oysters") with comparative observations on Isognomon isognomon?, The Biological Bulletin, vol. 135, pp. 378-405, 1968.