Reeve L. A. (February 1844) Conchologia iconica, or, Illustrations of the shells of molluscous animals. London, 1:
Conus ambiguus Reeve, L.A., 1844f. 244. Plate 54, figure 244.
Tryon G. W. (1884). Manual of Conchology, structural and systematic, with illustrations of the species. Volume 6. Conidae, Pleurotomidae. page 13. Plate 3, figure 41-42.