1. A holistic approach to accident and injury prevention in children's playgrounds;King, K.; Ball, D.,1989
2. Death during play: a study of playground and recreation deaths in children;Nixon, J.; Pearn, J.;BMJ
3. A holistic approach to accident and injury prevention in children's playgrounds;D.,1989
4. Standard specification for playgrounds and playground equipment;Standards Association of New Zealand:,1986
5. Australian Standard for playground equipment for parks, schools, and domestic use;Standards Association of Australia,,1981