APA (7th ed.) Citation

Geological Survey (U.S.) & Thatcher, W. R. (1996). When will the next great quake strike Northern California? U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Wayne R. Thatcher. When Will the Next Great Quake Strike Northern California? [Reston, Va.]: U.S. Geological Survey, 1996.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Wayne R. Thatcher. When Will the Next Great Quake Strike Northern California? U.S. Geological Survey, 1996.