Graham, R. C., & Robertson, J. K. (1990). An assessment of performance of wet atmospheric deposition samplers. U.S. Geological Survey.
Chicago Style (17th ed.) CitationGraham, Richard C., and J. K. Robertson. An Assessment of Performance of Wet Atmospheric Deposition Samplers. Reston, Virginia: U.S. Geological Survey, 1990.
MLA (9th ed.) CitationGraham, Richard C., and J. K. Robertson. An Assessment of Performance of Wet Atmospheric Deposition Samplers. U.S. Geological Survey, 1990.
Warning: These citations may not always be 100% accurate.