APA (7th ed.) Citation

Geological Survey (U.S.), Advanced National Seismic System (U.S.), & Wald, D. J. (2006). ShakeMap manual: Technical manual, user's guide, and software guide (Version 1.0 6/19/06.). U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Advanced National Seismic System (U.S.), and David J. Wald. ShakeMap Manual: Technical Manual, User's Guide, and Software Guide. Version 1.0 6/19/06. Reston, Va.: U.S. Geological Survey, 2006.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. ShakeMap Manual: Technical Manual, User's Guide, and Software Guide. Version 1.0 6/19/06. U.S. Geological Survey, 2006.