APA (7th ed.) Citation

United States. Department of Agriculture. Office of the Secretary. (1919). Summer vacation in Sopris National Forest. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Office of the Secretary. Summer Vacation in Sopris National Forest. Washington: [publisher not identified], 1919.

MLA (9th ed.) Citation

United States. Department of Agriculture. Office of the Secretary. Summer Vacation in Sopris National Forest. [publisher not identified], 1919.

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