APA (7th ed.) Citation

Tysdal, R. G. (1977). Geologic map of the Buchanan quadrangle, Liberia. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Tysdal, Russell G. Geologic Map of the Buchanan Quadrangle, Liberia. Reston, Va.: U.S. Geological Survey, 1977.

MLA (9th ed.) Citation

Tysdal, Russell G. Geologic Map of the Buchanan Quadrangle, Liberia. U.S. Geological Survey, 1977.

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