APA (7th ed.) Citation

Trace, R. D. (1962). Geology and fluorspar deposits of the Levias-Keystone and Dike-Eaton areas Crittenden County, Kentucky. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Trace, Robert Denny. Geology and Fluorspar Deposits of the Levias-Keystone and Dike-Eaton Areas Crittenden County, Kentucky. Washington, D.C.: United States Department of the Interior, Geological Survey, 1962.

MLA (9th ed.) Citation

Trace, Robert Denny. Geology and Fluorspar Deposits of the Levias-Keystone and Dike-Eaton Areas Crittenden County, Kentucky. United States Department of the Interior, Geological Survey, 1962.