APA (7th ed.) Citation

(1988). Map showing global distribution of first-motion focal mechanisms, 1981 - 1985. U.S. Geolog. Survey.

Chicago Style (17th ed.) Citation

Map Showing Global Distribution of First-motion Focal Mechanisms, 1981 - 1985. Reston, Va: U.S. Geolog. Survey, 1988.

MLA (9th ed.) Citation

Map Showing Global Distribution of First-motion Focal Mechanisms, 1981 - 1985. U.S. Geolog. Survey, 1988.

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