Campbell, M. R. (1894). Geologic atlas of U.S.: Estilville folio, Kentucky-Virginia-Tennessee. [s.n.].
Chicago Style (17th ed.) CitationCampbell, Marius R. Geologic Atlas of U.S.: Estilville Folio, Kentucky-Virginia-Tennessee. Washington, D.C.: [s.n.], 1894.
MLA (8th ed.) CitationCampbell, Marius R. Geologic Atlas of U.S.: Estilville Folio, Kentucky-Virginia-Tennessee. [s.n.], 1894.
Warning: These citations may not always be 100% accurate.