APA (7th ed.) Citation

Campbell, M. R. (1899). Geologic atlas of U.S: Bristol folio, Virginia-Tennessee. [publisher not identified].

Chicago Style (17th ed.) Citation

Campbell, Marius R. Geologic Atlas of U.S: Bristol Folio, Virginia-Tennessee. Washington, D.C.: [publisher not identified], 1899.

MLA (9th ed.) Citation

Campbell, Marius R. Geologic Atlas of U.S: Bristol Folio, Virginia-Tennessee. [publisher not identified], 1899.