(1985). Maps showing geologic terrane, drainage basins, overburden, and low flow of streams in Fairfax county and vicinity, Virginia. U.S. Geological Survey.
Chicago-Zitierstil (17. Ausg.)Maps Showing Geologic Terrane, Drainage Basins, Overburden, and Low Flow of Streams in Fairfax County and Vicinity, Virginia. Reston, Va: U.S. Geological Survey, 1985.
MLA-Zitierstil (9. Ausg.)Maps Showing Geologic Terrane, Drainage Basins, Overburden, and Low Flow of Streams in Fairfax County and Vicinity, Virginia. U.S. Geological Survey, 1985.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.