APA (7th ed.) Citation

Phillips, J. D. (2007). Geosoft eXecutables (GX's) developed by the U.S. Geological Survey, version 2.0, with notes on GX development from Fortran code (Version 2.0.). U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Phillips, Jeffrey D. Geosoft EXecutables (GX's) Developed by the U.S. Geological Survey, Version 2.0, with Notes on GX Development from Fortran Code. Version 2.0. Reston, Va.: U.S. Geological Survey, 2007.

MLA (9th ed.) Citation

Phillips, Jeffrey D. Geosoft EXecutables (GX's) Developed by the U.S. Geological Survey, Version 2.0, with Notes on GX Development from Fortran Code. Version 2.0. U.S. Geological Survey, 2007.