APA (7th ed.) Citation

United States. Forest Service. (1930). Road and information map, national forests of Washington: 1930. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Forest Service. Road and Information Map, National Forests of Washington: 1930. [Place of publication not identified]: [publisher not identified], 1930.

MLA (9th ed.) Citation

United States. Forest Service. Road and Information Map, National Forests of Washington: 1930. [publisher not identified], 1930.