APA (7th ed.) Citation

(1974). Aeromagnetic map of the Harper quadrangle, Liberia. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Aeromagnetic Map of the Harper Quadrangle, Liberia. Reston, VA: U.S. Geological Survey, 1974.

MLA (9th ed.) Citation

Aeromagnetic Map of the Harper Quadrangle, Liberia. U.S. Geological Survey, 1974.

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