APA (7th ed.) Citation

Graham, R. C., Robertson, J. K., & Obal, J. (1987). An assessment of the variability in performance of wet atmospheric deposition samplers. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Graham, Richard C., J. K. Robertson, and John Obal. An Assessment of the Variability in Performance of Wet Atmospheric Deposition Samplers. West Point, New York: U.S. Geological Survey, 1987.

MLA (9th ed.) Citation

Graham, Richard C., et al. An Assessment of the Variability in Performance of Wet Atmospheric Deposition Samplers. U.S. Geological Survey, 1987.