Não informado. (2007). Fire Management Today. U.S. Department of Agriculture, Forest Service.
Chicago-referens (17:e uppl.)Não informado. Fire Management Today. Washington: U.S. Department of Agriculture, Forest Service, 2007.
MLA-referens (8:e uppl.)Não informado. Fire Management Today. U.S. Department of Agriculture, Forest Service, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.