APA (7th ed.) Citation

Clapp, F. G., & Geological Survey. (1907). Amity folio [Pennsylvania. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Clapp, Frederick G., and Geological Survey. Amity Folio [Pennsylvania. Washington, D.C.: U.S. Geological Survey, 1907.

MLA (8th ed.) Citation

Clapp, Frederick G., and Geological Survey. Amity Folio [Pennsylvania. U.S. Geological Survey, 1907.

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