Page, R. A., Hendley, J. W., & Stauffer, P. H. (1999). Progress toward a safer future since the 1989 Loma Prieta earthquake (Online version 1.0.). U.S. Geological Survey.
Chicago Style (17th ed.) CitationPage, Robert A., James W. Hendley, and Peter H. Stauffer. Progress Toward a Safer Future Since the 1989 Loma Prieta Earthquake. Online version 1.0. [Menlo Park, Calif.]: U.S. Geological Survey, 1999.
MLA (9th ed.) CitationPage, Robert A., et al. Progress Toward a Safer Future Since the 1989 Loma Prieta Earthquake. Online version 1.0. U.S. Geological Survey, 1999.
Warning: These citations may not always be 100% accurate.