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 western coast of Africa: Western Sahara to Senegal (north of 15 north latitude). 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 Western Coast of Africa: Western Sahara to Senegal (north of 15 North Latitude). Reston, Va.: The Survey, 1990.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Map Showing Free-air Gravity Anomalies off the Western Coast of Africa: Western Sahara to Senegal (north of 15 North Latitude). The Survey, 1990.