APA (7th ed.) Citation

Geological Survey (U.S.), Liberian Geological Survey, Liberia, United States. Agency for International Development, Force, E. R., & Dunbar, J. D. F. (1977). Geologic map of the Gbanka quadrangle, Liberia. U.S. Geological Survey ; Liberian Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Liberian Geological Survey, Liberia, United States. Agency for International Development, Eric R. Force, and J. D. F. Dunbar. Geologic Map of the Gbanka Quadrangle, Liberia. [Reston, Virginia] : [Monrovia, Liberia?]: U.S. Geological Survey ; Liberian Geological Survey, 1977.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Gbanka Quadrangle, Liberia. U.S. Geological Survey ; Liberian Geological Survey, 1977.