Cite
MLA (8th Edition)
Geologic Map of the Clarksville South and Tungsten 7.5-Minute Quadrangles, Virginia and North Carolina. The Survey, For sale by Information Services, 1996.
APA (7th Edition)
Geologic map of the Clarksville South and Tungsten 7.5-minute quadrangles, Virginia and North Carolina. (1996). The Survey, For sale by Information Services.
Chicago (17th Edition)
“Geologic Map of the Clarksville South and Tungsten 7.5-Minute Quadrangles, Virginia and North Carolina.” Reston, VA: The Survey, For sale by Information Services, 1996.