Thompson, J.R. & Springer, S. (1961)
Sharks, skates, rays, and chimaeras. Circular of the United States Fish and Wildlife Service, 119, 1–19

Springer, S. & Thompson, J.R. (1957)
Night Sharks, Hypoprion, from the Gulf of Mexico and the Straits of Florida. Copeia, 1957(2), 160