APA (7th ed.) Citation

United States. National Park Service & Hill, C. L. (1928). Forests of Yosemite, Sequoia, and General Grant National Parks. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. National Park Service and C. L. Hill. Forests of Yosemite, Sequoia, and General Grant National Parks. Washington: U.S. GPO, 1928.

MLA (9th ed.) Citation

United States. National Park Service and C. L. Hill. Forests of Yosemite, Sequoia, and General Grant National Parks. U.S. GPO, 1928.