APA (7th ed.) Citation

Fauth, J. L., & Ketcham, M. P. (1977). Geologic map of the Catoctin Furnace and Blue Ridge Summit quadrangles, Maryland. Maryland Geological Survey.

Chicago Style (17th ed.) Citation

Fauth, John L., and Margaret P. Ketcham. Geologic Map of the Catoctin Furnace and Blue Ridge Summit Quadrangles, Maryland. Baltimore: Maryland Geological Survey, 1977.

MLA (9th ed.) Citation

Fauth, John L., and Margaret P. Ketcham. Geologic Map of the Catoctin Furnace and Blue Ridge Summit Quadrangles, Maryland. Maryland Geological Survey, 1977.