1. Records of the National Swimming Pool Institute, Washington, DC, 1982
2. Boating Statistics. Chicago, Boating Industry Association, 1983, p 2
3. Accident Facts, 1982. Chicago, National Safety Council, 1983, pp 6–15
4. A Model State Recreational Injury Control Program. Atlanta, Center for Environmental Health, Centers for Disease Control, 1981, pp 8–36