Não informado. (2022). US Forest Service Research Paper RM. Rocky Mountain Forest and Range Experimemt Station.
Chicago-referens (17:e uppl.)Não informado. US Forest Service Research Paper RM. Fort Collins, Colo: Rocky Mountain Forest and Range Experimemt Station, 2022.
MLA-referens (8:e uppl.)Não informado. US Forest Service Research Paper RM. Rocky Mountain Forest and Range Experimemt Station, 2022.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.