APA (7th ed.) Citation

Geological Survey (U.S.), United States. Defense Mapping Agency, & Folger, D. W. (1990). Map showing free-air gravity anomalies off the southern coast of west-central Africa: Liberia to Ghana. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), United States. Defense Mapping Agency, and David W. Folger. Map Showing Free-air Gravity Anomalies off the Southern Coast of West-central Africa: Liberia to Ghana. Reston, Va.: The Survey, 1990.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Map Showing Free-air Gravity Anomalies off the Southern Coast of West-central Africa: Liberia to Ghana. The Survey, 1990.