Witzell, W.N. (1985)
The incidental capture of sharks in the Atlantic United States Fishery Conservation Zone by the Japanese tuna longline fleet. In Shark catches from selected fisheries off the U.S. east coast. By Emory D. Anderson, John G. Casey, John J. Hoey, and W. N. Witzell, NOAA Technical Report, 31: 21–22