Reed, J. C., Jr. (1963). Crystalline rocks of the Potomac River Gorge near Washington, D.C. U.S. G.P.O..
Chicago Style (17th ed.) CitationReed, John Calvin, Jr. Crystalline Rocks of the Potomac River Gorge Near Washington, D.C. Washington, D.C.: U.S. G.P.O., 1963.
MLA (9th ed.) CitationReed, John Calvin, Jr. Crystalline Rocks of the Potomac River Gorge Near Washington, D.C. U.S. G.P.O., 1963.
Warning: These citations may not always be 100% accurate.