APA (7th ed.) Citation

Geological Survey (U.S.), Fuller, H. K., McIntosh, W. L., & Eister, M. F. (1990). Geologic map index of Virginia (Rev. and updated.). The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), H. Kit Fuller, Willard L. McIntosh, and Margaret F. Eister. Geologic Map Index of Virginia. Rev. and updated. [Reston, Va.]: The Survey, 1990.

MLA (8th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map Index of Virginia. Rev. and updated. The Survey, 1990.