1. Baillie WF, Grevis IW. Ages of drivers in tractor accidents. Agricultural Engineering Report No. 4/67, University of Melbourne, Department of Agricultural Engineering; 1967.
2. National Farm Medicine Center. Agricultural Injury Fact Sheet. 1996. Available from: http://www.cdc.gov/nasd/docs/d000901-d001000/d000984/d000984.pdf. [Last accessed on 2016 May, 5].
3. National Safety Council. Report on Injuries in America, 2002. Itasca, IL: National Safety Council; 2003.
4. Pistolesi A. Safety and Health in Agriculture. Geneva, Switzerland: International Labour Office; Available from: http://www.ilo.org/safework.
5. National Agricultural Statistics Service, U. S. Department of Agriculture. 2001 Childhood Agricultural-Related Injuries. Washington, DC: U. S. Department of Agriculture; 2004.