APA (7th ed.) Citation

Stover, C. W., & Coffman, J. L. (1993). Seismicity of the United States, 1568-1989 (Revised.). U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Stover, Carl W., and Jerry L. Coffman. Seismicity of the United States, 1568-1989. Revised. Washington: U.S. Department of the Interior, U.S. Geological Survey, 1993.

MLA (9th ed.) Citation

Stover, Carl W., and Jerry L. Coffman. Seismicity of the United States, 1568-1989. Revised. U.S. Department of the Interior, U.S. Geological Survey, 1993.