APA (7th ed.) Citation

Clapp, F. G. (1907). Geologic atlas of U.S.: Amity folio, Pennsylvania. [s.n.].

Chicago Style (17th ed.) Citation

Clapp, Frederick G. Geologic Atlas of U.S.: Amity Folio, Pennsylvania. Washington, D.C.: [s.n.], 1907.

MLA (8th ed.) Citation

Clapp, Frederick G. Geologic Atlas of U.S.: Amity Folio, Pennsylvania. [s.n.], 1907.

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