Geological Survey (U.S.). (1983). Virginia: Index to topographic and other map coverage. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.). Virginia: Index to Topographic and Other Map Coverage. Reston, Va.: The Survey, 1983.
MLA (9th ed.) CitationGeological Survey (U.S.). Virginia: Index to Topographic and Other Map Coverage. The Survey, 1983.
Warning: These citations may not always be 100% accurate.