APA (7th ed.) Citation

Alexander, R. R. (1987). Ecology, silviculture, and management of the Engelmann spruce -- subalpine fir type in the central and southern Rocky Mountains. U.S. Dept. of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

Alexander, Robert R. Ecology, Silviculture, and Management of the Engelmann Spruce -- Subalpine Fir Type in the Central and Southern Rocky Mountains. Washington, DC: U.S. Dept. of Agriculture, Forest Service, 1987.

MLA (9th ed.) Citation

Alexander, Robert R. Ecology, Silviculture, and Management of the Engelmann Spruce -- Subalpine Fir Type in the Central and Southern Rocky Mountains. U.S. Dept. of Agriculture, Forest Service, 1987.