APA (7th ed.) Citation

(1988). Map showing global distribution of seismicity, 1977 - 1986. U.S. Geolog. Survey.

Chicago Style (17th ed.) Citation

Map Showing Global Distribution of Seismicity, 1977 - 1986. Reston, Va: U.S. Geolog. Survey, 1988.

MLA (9th ed.) Citation

Map Showing Global Distribution of Seismicity, 1977 - 1986. U.S. Geolog. Survey, 1988.

Warning: These citations may not always be 100% accurate.