APA (7th ed.) Citation

United States. National Park Service. (1987). Seasonal employment: The national parks. The Service.

Chicago Style (17th ed.) Citation

United States. National Park Service. Seasonal Employment: The National Parks. [Washington, D.C.]: The Service, 1987.

MLA (9th ed.) Citation

United States. National Park Service. Seasonal Employment: The National Parks. The Service, 1987.

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