APA (7th ed.) Citation

United States. Forest Service. Pacific Northwest Region & Brockway, D. G. (1983). Plant association and management guide for the Pacific silver fir zone: Gifford Pinchot National Forest. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region.

Chicago Style (17th ed.) Citation

United States. Forest Service. Pacific Northwest Region and Dale G. Brockway. Plant Association and Management Guide for the Pacific Silver Fir Zone: Gifford Pinchot National Forest. [Portland, Or.?]: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, 1983.

MLA (9th ed.) Citation

United States. Forest Service. Pacific Northwest Region and Dale G. Brockway. Plant Association and Management Guide for the Pacific Silver Fir Zone: Gifford Pinchot National Forest. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, 1983.