APA (7th ed.) Citation

Tetra Tech EM Inc. (2006). XRF technologies for measuring trace elements in soil and sediment: Xcalibur ElvaX XRF Analyzer. National Exposure Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency.

Chicago Style (17th ed.) Citation

Tetra Tech EM Inc. XRF Technologies for Measuring Trace Elements in Soil and Sediment: Xcalibur ElvaX XRF Analyzer. Washington. DC: National Exposure Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 2006.

MLA (9th ed.) Citation

Tetra Tech EM Inc. XRF Technologies for Measuring Trace Elements in Soil and Sediment: Xcalibur ElvaX XRF Analyzer. National Exposure Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 2006.