References should follow the Harvard referencing style. Here are some examples.
Ahern, J.A., M.R. Lilly, and L.D. Hinzman. 2003. Ground-water capture zone delineation of hypothetical systems: Methodology, comparison and real world application. Eos, Transactions, American Geophysical Union 84, no. 46. Fall Meeting Supplement,
Haitjema, H.M. 1995. Analytic Element Modeling of Groundwater Flow. San Diego, California: Academic Press Inc.
Gerba, C.P., and G. Bitton. 1984. Microbial pollutants—Their survival and transport pattern to groundwater. In Groundwater Pollution Microbiology, ed. G. Bitton and C.P. Gerba, 65–88. New York: John Wiley and Sons.
Book (edited and with volume number and different editor for book and book series)
Phillips, F.M., and M.C. Castro. 2003. Groundwater dating and residence-time measurements. In Treatise on Geochemistry, ed. H.D. Holland and K.K. Turekian, vol. 5: Surface and Ground Water, Weathering, and Soils, ed. J.I. Drever, 451–497.
Oxford, UK: Elsevier.
Book (edited and special publication)
Price, M. 1987. Fluid flow in the Chalk of England. In Fluid Flow in Sedimentary Basins and Aquifers, ed. J.C. Goff and B.P.J. Williams, 141–156. London, UK: Geological Society of London, Special Publication no. 34.
Book with edition
Domenico, P.A., and F.W. Schwartz. 1998. Physical and Chemical Hydrogeology, 2nd ed. New York: John Wiley & Sons Inc.
Maxey, G.B., and T.E. Eakin. 1949. Ground water in White Valley, White Pine, Nye, and Lincoln counties, Nevada. Water Resource Bulletin 8. Reno, Nevada: Nevada State Engineer’s Office.
Editor as author
Bear, J., C.F. Tsang, and G. de Marsily, ed. 1993. Flow and Contaminant Transport in Fractured Rock. San Diego, California: Academic Press.
Moench, A.F. 1989. Convergent radial dispersion: A Laplace transform solution for aquifer tracer testing. Water Resources Research 25, no. 3:, 439–447. (Correction in Water Resources Research 32, no. 5 (1996): 1457.)
Moench, A.F. 1989. Convergent radial dispersion. In press.
Drever, J.I. 2006. Personal interview, November 13, Laramie, Wyoming.
Gray, J.R., G. Lacrampe-Couloume, D. Gandi, K.M. Scow, R.D. Wilson, D.M. Macay, and B. Sherwood-Lollar. 2002. Carbon and hydrogen isotopic fractionation during biodegradation of methyl tert-butyl ether. Environmental Science & Technology 36, no. 9: 1931–1938.
Organization as author
American Public Health Association (APHA). 1995. Standard Methods for the Examination of Water and Wastewater. Baltimore, Maryland: United Book Press Inc.
U.S. EPA. 1997. SW-846 Method 8260B, Testing Methods for Evaluating Solid Waste, Physical/Chemical Methods, SW-846, 3rd ed., update II. Washington, DC: U.S. EPA.
Paper presented at meeting
Hess, K.M. 1989. Use of borehole flowmeter to determine spatial heterogeneity of hydraulic conductivity and macrodispersivity in a sand and gravel aquifer, Cape Cod, Massachusetts. Paper presented at NWWA Conference on New Field Techniques for Quantifying
the Physical and Chemical Properties of Heterogeneous Aquifers, Houston, Texas.
Parker, B.L., and J.A. Cherry. 1999. Scale considerations of chlorinated solvent source zones and contaminant fluxes: Insights from detailed field studies. In Proceedings of U.S. Geological Survey Toxic Substances Hydrology Program, March 8–12,
Charleston, South Carolina, ed. D.W. Morganwalt and H.T. Buxton. Water Resources Investigations Report 99-4018C. U.S. Geological Survey.
Harbaugh, A.W. 2005. MODFLOW‐2005, the U.S. Geological Survey modular ground‐water model—the ground‐water flow process. U.S. Geological Survey Techniques and Methods Report 6–A16. https://pubs.usgs.gov/tm/2005/tm6A16 (accessed April 25, 2019).
Carle, S.F. 1999. T-PROGS: Transition Probability Geostatistical Software, version 2.1. Davis, California: University of California.
Bogue, K.V. 1994. Evaluation of wellhead protection models: A case study, Xenia, Ohio. M.S. thesis, Wright University, Dayton, Ohio.
California Department of Health Services. 2002. MTBE in California drinking water. http://www.dhs.cahwnet.gov/ps/ddwem/chemicals/MTBE/mtbeindex.htm (accessed October 2, 2002).