Ball James W., Blaine McCleske R., & U.S. Geological Survey. A new cation-exchange method for accurate field speciation of hexavalent chromium.
Chicago Style (17th ed.) CitationBall James W., Blaine McCleske R., and U.S. Geological Survey. A New Cation-exchange Method for Accurate Field Speciation of Hexavalent Chromium.
MLA (9th ed.) CitationBall James W., et al. A New Cation-exchange Method for Accurate Field Speciation of Hexavalent Chromium.
Warning: These citations may not always be 100% accurate.