APA (7th ed.) Citation

United States. National Park Service. (1999). Comprehensive management and use plan, final environmental impact statement, California National Historic Trail, Pony Express National Historic Trail ; Management and use plan update, final environmental impact statement, Oregon National Historic Trail, Mormon Pioneer National Historic Trail. U.S. Dept. of the Interior, National Park Service.

Chicago Style (17th ed.) Citation

United States. National Park Service. Comprehensive Management and Use Plan, Final Environmental Impact Statement, California National Historic Trail, Pony Express National Historic Trail ; Management and Use Plan Update, Final Environmental Impact Statement, Oregon National Historic Trail, Mormon Pioneer National Historic Trail. Salt Lake City, UT: U.S. Dept. of the Interior, National Park Service, 1999.

MLA (9th ed.) Citation

United States. National Park Service. Comprehensive Management and Use Plan, Final Environmental Impact Statement, California National Historic Trail, Pony Express National Historic Trail ; Management and Use Plan Update, Final Environmental Impact Statement, Oregon National Historic Trail, Mormon Pioneer National Historic Trail. U.S. Dept. of the Interior, National Park Service, 1999.