1. American Veterinary Society of Animal Behavior 2007 Guidelines on the use of punishment for dealing with behavior problems in animals http://www.avsabonline.org/avsabonline/images/stories/Position_Statements/punishment%20guidelines-aversives%20effects-definitions.pdf
2. Florida porpoise trained to do tricks, for science, just like a smart dog;Anderson;Pensacola Journal,1951
3. Training and open sea release of an Atlantic bottlenosed porpoise Tursiops truncatus (Montagu);Bailey;Naval Ordinance Testing Station Technical Publication 3838,1965
4. Bailey , R. E. Bailey , M. B. 1992a Interview with Kent Burgess. [Motion Picture]. (Available from Robert E. Bailey, 714 Arkridge Circle: Hot Springs, Arkansas 71913)