Sandstrom, M. W. (2001). Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: Determination of moderate-use pesticides and selected degradates in water by C-18 solid-phase extraction and gas chromatography/mass spectrometry. U.S. Geological Survey.
Chicago Style (17th ed.) CitationSandstrom, Mark W. Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory: Determination of Moderate-use Pesticides and Selected Degradates in Water by C-18 Solid-phase Extraction and Gas Chromatography/mass Spectrometry. Denver, Colorada: U.S. Geological Survey, 2001.
MLA (9th ed.) CitationSandstrom, Mark W. Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory: Determination of Moderate-use Pesticides and Selected Degradates in Water by C-18 Solid-phase Extraction and Gas Chromatography/mass Spectrometry. U.S. Geological Survey, 2001.