Parkhurst, D. L. (1995). User's guide to PHREEQC: A computer program for speciation, reaction-path, advective-transport, and inverse geochemical calculations. U.S. Geological Survey.
Chicago Style (17th ed.) CitationParkhurst, David L. User's Guide to PHREEQC: A Computer Program for Speciation, Reaction-path, Advective-transport, and Inverse Geochemical Calculations. Lakewood, Colorado: U.S. Geological Survey, 1995.
MLA (9th ed.) CitationParkhurst, David L. User's Guide to PHREEQC: A Computer Program for Speciation, Reaction-path, Advective-transport, and Inverse Geochemical Calculations. U.S. Geological Survey, 1995.
Warning: These citations may not always be 100% accurate.