APA (7th ed.) Citation

United States. Forest Service, Good, L. S., Washburn, F. E., & Flack, F. (1942). Pike National Forest, Colorado. The Service.

Chicago Style (17th ed.) Citation

United States. Forest Service, L. S. Good, F. E. Washburn, and Frank Flack. Pike National Forest, Colorado. Washington [D.C.]: The Service, 1942.

MLA (9th ed.) Citation

United States. Forest Service, et al. Pike National Forest, Colorado. The Service, 1942.