APA (7th ed.) Citation

Cardwell, D. H., Erwin, R. B., Woodward, H. P., & Lotz, C. W. (1986). Geologic map of West Virginia, 1968 (Rev. 1986.). West Virginia Geological and Economic Survey.

Chicago Style (17th ed.) Citation

Cardwell, Dudley H., Robert B. Erwin, Herbert Preston Woodward, and Charles W. Lotz. Geologic Map of West Virginia, 1968. Rev. 1986. [Morgantown]: West Virginia Geological and Economic Survey, 1986.

MLA (9th ed.) Citation

Cardwell, Dudley H., et al. Geologic Map of West Virginia, 1968. Rev. 1986. West Virginia Geological and Economic Survey, 1986.