APA (7th ed.) Citation

Hopkins, H. T. (1984). Ground-water availability along the Blue Ridge Parkway, Virginia. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Hopkins, Herbert T. Ground-water Availability Along the Blue Ridge Parkway, Virginia. Richmond, Va.: U.S. Geological Survey, 1984.

MLA (9th ed.) Citation

Hopkins, Herbert T. Ground-water Availability Along the Blue Ridge Parkway, Virginia. U.S. Geological Survey, 1984.