United States. Environmental Protection Agency & Bortleson, G. C. (2001). Sediment-quality assessment of Franklin D. Roosevelt Lake and the upstream reach of the Columbia River, Washington, 1992. U.S. Geological Survey For sale by the U.S. Geological Survey, Map Distribution.
Cita Chicago (17th ed.)United States. Environmental Protection Agency i Gilbert Carl Bortleson. Sediment-quality Assessment of Franklin D. Roosevelt Lake and the Upstream Reach of the Columbia River, Washington, 1992. Reston, Va., Denver, CO: U.S. Geological Survey For sale by the U.S. Geological Survey, Map Distribution, 2001.
Cita MLA (9th ed.)United States. Environmental Protection Agency i Gilbert Carl Bortleson. Sediment-quality Assessment of Franklin D. Roosevelt Lake and the Upstream Reach of the Columbia River, Washington, 1992. U.S. Geological Survey For sale by the U.S. Geological Survey, Map Distribution, 2001.