APA (7th ed.) Citation

(1974). Simple Bouguer gravity map of the Monrovia quadrangle, Liberia. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Simple Bouguer Gravity Map of the Monrovia Quadrangle, Liberia. Reston, VA: U.S. Geological Survey, 1974.

MLA (9th ed.) Citation

Simple Bouguer Gravity Map of the Monrovia Quadrangle, Liberia. U.S. Geological Survey, 1974.

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