APA (7th ed.) Citation

Geological Survey (U.S.). (1981). 1:100 000-scale metric topographic map of Bluefield, West Virginia--Virginia, 1981: 30 x 60 minute series (topographic). The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). 1:100 000-scale Metric Topographic Map of Bluefield, West Virginia--Virginia, 1981: 30 X 60 Minute Series (topographic). Reston, Va.: The Survey, 1981.

MLA (9th ed.) Citation

Geological Survey (U.S.). 1:100 000-scale Metric Topographic Map of Bluefield, West Virginia--Virginia, 1981: 30 X 60 Minute Series (topographic). The Survey, 1981.