Snyder, D. T., Morgan, D. S., & McGrath, T. S. (1994). Estimation of ground-water recharge from precipitation, runoff into drywells, and on-site waste-disposal systems in the Portland basin, Oregon and Washington. U.S. Geological Survey.
Chicago Style (17th ed.) CitationSnyder, Daniel T., David S. Morgan, and Timothy S. McGrath. Estimation of Ground-water Recharge from Precipitation, Runoff into Drywells, and On-site Waste-disposal Systems in the Portland Basin, Oregon and Washington. Portland, Oregon: U.S. Geological Survey, 1994.
MLA (9th ed.) CitationSnyder, Daniel T., et al. Estimation of Ground-water Recharge from Precipitation, Runoff into Drywells, and On-site Waste-disposal Systems in the Portland Basin, Oregon and Washington. U.S. Geological Survey, 1994.