APA (7th ed.) Citation

Force, E. R. (1983). Geology of Nimba County, Liberia. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Force, Eric R. Geology of Nimba County, Liberia. [Reston, Va.]: United States Department of the Interior, Geological Survey, 1983.

MLA (9th ed.) Citation

Force, Eric R. Geology of Nimba County, Liberia. United States Department of the Interior, Geological Survey, 1983.