Singh, T. (1982). Biomass equations for ten major tree species of the prairie provinces. Northern Forest Research Centre, Canadian Forestry Service.
Chicago-referens (17:e uppl.)Singh, T. Biomass Equations for Ten Major Tree Species of the Prairie Provinces. Canada: Northern Forest Research Centre, Canadian Forestry Service, 1982.
MLA-referens (9:e uppl.)Singh, T. Biomass Equations for Ten Major Tree Species of the Prairie Provinces. Northern Forest Research Centre, Canadian Forestry Service, 1982.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.