APA (7th ed.) Citation

Owens, J. P., & Denny, C. S. (1984). Geologic map of Somerset County. State of Maryland, Maryland Geological Survey.

Chicago Style (17th ed.) Citation

Owens, James Patrick, and Charles Storrow Denny. Geologic Map of Somerset County. [Baltimore?]: State of Maryland, Maryland Geological Survey, 1984.

MLA (9th ed.) Citation

Owens, James Patrick, and Charles Storrow Denny. Geologic Map of Somerset County. State of Maryland, Maryland Geological Survey, 1984.