APA (7th ed.) Citation

United States. Forest Service. (1981). Is the water safe?: Think before you drink. U.S. Dept. of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

United States. Forest Service. Is the Water Safe?: Think Before You Drink. [Washington, D.C.?]: U.S. Dept. of Agriculture, Forest Service, 1981.

MLA (9th ed.) Citation

United States. Forest Service. Is the Water Safe?: Think Before You Drink. U.S. Dept. of Agriculture, Forest Service, 1981.