APA (7th ed.) Citation

Simon, R. B., Stover, C. W., & Person, W. J. (1976). Earthquakes in the United States, April-June 1974.

Chicago Style (17th ed.) Citation

Simon, Ruth B., Carl W. Stover, and W. J. Person. Earthquakes in the United States, April-June 1974. 1976.

MLA (9th ed.) Citation

Simon, Ruth B., et al. Earthquakes in the United States, April-June 1974. 1976.