Klein, J. M., & Bradford, W. L. (1980). Distribution of nitrate in the unsaturated zone, Highland-East Highlands area, San Bernardino County, California. U.S. Geological Survey.
Chicago Style (17th ed.) CitationKlein, John M., and Wesley L. Bradford. Distribution of Nitrate in the Unsaturated Zone, Highland-East Highlands Area, San Bernardino County, California. Menlo Park, California: U.S. Geological Survey, 1980.
MLA (8th ed.) CitationKlein, John M., and Wesley L. Bradford. Distribution of Nitrate in the Unsaturated Zone, Highland-East Highlands Area, San Bernardino County, California. U.S. Geological Survey, 1980.
Warning: These citations may not always be 100% accurate.