APA (7th ed.) Citation

Colorado Rare Plant Technical Committee & United States. Forest Service. (1997). Colorado rare plant field guide. [U.S. Dept. of Agriculture, Forest Service?].

Chicago Style (17th ed.) Citation

Colorado Rare Plant Technical Committee and United States. Forest Service. Colorado Rare Plant Field Guide. [Washington, D.C.?]: [U.S. Dept. of Agriculture, Forest Service?], 1997.

MLA (9th ed.) Citation

Colorado Rare Plant Technical Committee and United States. Forest Service. Colorado Rare Plant Field Guide. [U.S. Dept. of Agriculture, Forest Service?], 1997.