APA (7th ed.) Citation

Stover, C. W., Reagor, B. G., & Algermissen, S. T. (1981). Seismicity map of the states of Delaware and Maryland. The Survey.

Chicago Style (17th ed.) Citation

Stover, Carl W., B. Glen Reagor, and Sylvester Theodore Algermissen. Seismicity Map of the States of Delaware and Maryland. Reston, Va.: The Survey, 1981.

MLA (9th ed.) Citation

Stover, Carl W., et al. Seismicity Map of the States of Delaware and Maryland. The Survey, 1981.