Rocky Mountain Research Station (Fort Collins, Colo.), & Abella, S. R. (2011). Using a terrestrial ecosystem survey to estimate the historical density of ponderosa pine trees. U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Research Station.
Chicago Style (17th ed.) CitationRocky Mountain Research Station (Fort Collins, Colo.), and Scott R. Abella. Using a Terrestrial Ecosystem Survey to Estimate the Historical Density of Ponderosa Pine Trees. Fort Collins, CO: U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Research Station, 2011.
MLA (9th ed.) CitationRocky Mountain Research Station (Fort Collins, Colo.), and Scott R. Abella. Using a Terrestrial Ecosystem Survey to Estimate the Historical Density of Ponderosa Pine Trees. U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Research Station, 2011.