APA (7th ed.) Citation

Reagor, B. G., Stover, C. W., & Algermissen, S. T. (1985). Seismicity map of the State of Montana. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Reagor, B. Glen, Carl W. Stover, and Sylvester Theodore Algermissen. Seismicity Map of the State of Montana. Reston, Va.: U.S. Geological Survey, 1985.

MLA (9th ed.) Citation

Reagor, B. Glen, et al. Seismicity Map of the State of Montana. U.S. Geological Survey, 1985.