APA (7th ed.) Citation

United States. Forest Service. Pacific Southwest Region & Sierra National Forest (Agency : U.S.). (2017). Sierra National Forest atlas: 7 1/2ʹ quadrangle topographic maps. United States Department of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

United States. Forest Service. Pacific Southwest Region and Sierra National Forest (Agency : U.S.). Sierra National Forest Atlas: 7 1/2ʹ Quadrangle Topographic Maps. [Washington, D.C.]: United States Department of Agriculture, Forest Service, 2017.

MLA (9th ed.) Citation

United States. Forest Service. Pacific Southwest Region and Sierra National Forest (Agency : U.S.). Sierra National Forest Atlas: 7 1/2ʹ Quadrangle Topographic Maps. United States Department of Agriculture, Forest Service, 2017.