APA (7th ed.) Citation

Hearn, P. P., Geological Survey, & American Geological Institute. (2003). Global GIS database. American Geological Institute.

Chicago Style (17th ed.) Citation

Hearn, Paul P., Geological Survey, and American Geological Institute. Global GIS Database. Alexandria, VA: American Geological Institute, 2003.

MLA (8th ed.) Citation

Hearn, Paul P., et al. Global GIS Database. American Geological Institute, 2003.