APA (7th ed.) Citation

Geological Survey (U.S.) & Butler, D. L. (1996). Detailed study of selenium and other constituents in water, bottom sediment, soil, alfalfa, and biota associated with irrigation drainage in the Uncompahgre Project area and in the Grand Valley, west-central Colorado, 1991-93. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and David L. Butler. Detailed Study of Selenium and Other Constituents in Water, Bottom Sediment, Soil, Alfalfa, and Biota Associated with Irrigation Drainage in the Uncompahgre Project Area and in the Grand Valley, West-central Colorado, 1991-93. Denver, Colo.: U.S. Geological Survey, 1996.

MLA (9th ed.) Citation

Geological Survey (U.S.) and David L. Butler. Detailed Study of Selenium and Other Constituents in Water, Bottom Sediment, Soil, Alfalfa, and Biota Associated with Irrigation Drainage in the Uncompahgre Project Area and in the Grand Valley, West-central Colorado, 1991-93. U.S. Geological Survey, 1996.