APA (7th ed.) Citation

United States. Forest Service. (1922). Holy Cross National Forest, Colo. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Forest Service. Holy Cross National Forest, Colo. [Place of publication not identified]: [publisher not identified], 1922.

MLA (9th ed.) Citation

United States. Forest Service. Holy Cross National Forest, Colo. [publisher not identified], 1922.

Warning: These citations may not always be 100% accurate.