Darton, N. H., & McGee, W. J. (1894). Geologic atlas of U.S.: Fredericksburg Folio, Virginia-Maryland. [s.n.].
Chicago Style (17th ed.) CitationDarton, Nelson Horatio, and W. J. McGee. Geologic Atlas of U.S.: Fredericksburg Folio, Virginia-Maryland. Washington, D.C.: [s.n.], 1894.
MLA (8th ed.) CitationDarton, Nelson Horatio, and W. J. McGee. Geologic Atlas of U.S.: Fredericksburg Folio, Virginia-Maryland. [s.n.], 1894.
Warning: These citations may not always be 100% accurate.